OPINION
PAEZ, Circuit Judge:This appeal from the grant of a preliminary injunction involves an evangelical Christian church seeking access to a public library meeting room to conduct, among other activities, religious worship services. We are called upon to navigate between two equally important interests: the church’s right to access a government building that is open to other groups, and the government’s right to preserve its property for its intended uses. We conclude that the district court erred when it found that the church was likely to succeed on the merits of its First Amendment claim and therefore abused its discretion in granting preliminary injunctive relief. We have jurisdiction under 28 U.S.C. § 1292, and we reverse in part and remand.
I.
The relevant facts are not disputed. Contra Costa County (“County”) makes available to the public its public library meeting rooms during operating hours. The County’s goal in making these meeting rooms available is “to encourage the use of library meeting rooms for educational, cultural and community related meetings, programs and activities.” Pursuant to the County’s library meeting room policy, “[n]on-profit and civic organizations, for-profit organizations, schools and governmental organizations” may use the meeting room space for “meetings, programs, or activities of educational, cultural or community interest.” The County regulates use of the meeting rooms in the following ways: (1) library meeting rooms are available on a first-come, first-served *903basis; (2) the applicant must submit an application that identifies the applicant and purpose of the meeting; (3) access to the meeting room is contingent upon approval by the library staff, and the County library reserves the right to deny an application or revoke permission previously granted; (4) an applicant must pay a fee for use of the meeting room when a meeting is not open to the general public, when it charges an admission fee, or when it involves sales or solicitations; (5) schools may not utilize a meeting room “for instructional purposes as a regular part of the curriculum”; and (6) the library meeting room “shall not be used for religious services.”
It is the last policy restriction on “Religious Use” that is the subject of this case. The “Religious Use” restriction has twice been amended since the present action was filed in the district court. Initially, the policy provided that “[ljibrary meeting rooms shall not be used for religious purposes.” In August 2004, the County modified the policy to prohibit use of library meeting rooms “for religious services or activities.” On December 14, 2004, the County Board of Supervisors adopted Resolution No.2004/655, the County’s current policy, to prohibit “religious services” from being conducted in library meeting rooms.
Plaintiff Faith Center Church Evangelistic Ministries is a non-profit religious corporation led by plaintiff Pastor Hattie Mae Hopkins (collectively “Faith Center”). According to Faith Center’s verified amended complaint, Pastor Hopkins believes that she is called to share her Christian faith with others. Pastor Hopkins believes that there are many individuals who need to hear about the gospel of Jesus Christ but who may never enter a traditional church building. To reach those individuals, Pastor Hopkins holds meetings and worship services in non-church buildings under the auspices of Faith Center. Participants at Faith Center’s meetings generally “(a) discuss educational, cultural, and community issues from a religious perspective; (b) engage in religious speech and religious worship; and (c) engage in discussing the Bible and other religious books [as well as] teaching, praying, singing, sharing testimonies, sharing meals, and discussing social and political issues.”
Pastor Hopkins believes that divine providence guided her to begin holding Faith Center meetings in Antioch, California. In May 2004, Pastor Hopkins submitted applications requesting to use the County’s Antioch Branch Library meeting room for May 29, 2004 and July 31, 2004. In each application, Pastor Hopkins described the purpose of Faith Center’s meetings as “Prayer, Praise and Worship Open to the Public, Purpose to Teach and Encourage Salvation thru Jesus Christ and Build up Community.” Pastor Hopkins received confirmation from Antioch Library staff that her applications had been approved and that Faith Center’s dates were reserved on the library’s calendar.
Faith Center advertised its May 29, 2004 meeting with a flyer describing a “Women of Excellence Conference” sponsored by Faith Center Evangelistic Ministries Outreach. The flyer stated:
Coming to Antioch, California, on May 29th 2004, where the power of God would be moving to bring miracles into your life. “For this is the hour of the believer,” thus saith the Lord, for divine impartation of spiritual gifts, and empowerment, for the body of Christ to move forward in total victory. Come and receive your blessing!
The flyer divided the day’s activities into a “Wordshop” from 11:00 a.m. to 12:00 p.m., refreshments, and an afternoon “Praise and Worship” service with a sermon by Pastor Hopkins from 1:00 p.m. to 3:00 p.m. The topic of the morning *904“wordshop” was “ ‘The Making of an Intercessor,’ an End-time call to Prayer for every Believer, and how to pray fervent, effectual Prayers that God hears and answers.”
Faith Center held its meeting and service on May 29, 2004. Toward the end of the afternoon service, Antioch Library staff informed Faith Center representatives that they were not permitted to use the meeting room for religious activities. According to Faith Center, the library staff did not express concern about excessive noise but rather about a violation of the “Religious Use” policy, which, at that time, prohibited the use of library meeting rooms for “religious purposes.”1 In June 2004, the County removed Faith Center’s July 31, 2004 meeting from the Antioch Library calendar and later confirmed with Faith Center that the July meeting had been cancelled.
On July 30, 2004, Faith Center sued to enjoin the County from excluding Faith Center’s proposed religious meetings on the basis of the County’s “Religious Use” policy.2 Faith Center also sought a declaration that the meeting room policy was unconstitutional on its face and as applied to Faith Center’s proposed use of the meeting room.3 Faith Center expressed a desire to hold Saturday morning meetings in the Antioch meeting room every other month.
Before the district court, Faith Center argued that the County discriminated against Faith Center on the basis of the church’s viewpoint when it enforced its old policy prohibiting access to the meeting room for “religious purposes” and cancelled Faith Center’s July 31, 2004 meeting. Faith Center also asserted that enforcement of any of the County’s “Religious Use” policies, including the current one barring “religious services,” would result in viewpoint discrimination in violation of the First Amendment.
The County agreed that its former meeting room policies were overly broad and that Faith Center’s morning “wordsh-op” at the May 29th meeting was the type of religious speech activity that would be permitted under the current policy. The County, however, argued that barring Faith Center’s religious worship services from the meeting room was a permissible exclusion of a category of speech meant to preserve a limited public forum for its intended uses. The County viewed Faith Center’s May 29th afternoon “praise and worship” session as mere religious worship exceeding the purpose for which the meeting room forum had been created.4
*905The district court granted Faith Center’s motion for a preliminary injunction. See Faith Center Church Evangelistic Ministries v. Glover, No. 04-03111, 2005 WL 1220947 (N.D.Cal. May 23, 2005). The district court concluded that Faith Center was substantially likely to prevail on its claim that enforcement of the County’s past or current library meeting room policies to exclude Faith Center’s proposed religious worship activities would result in unconstitutional viewpoint discrimination. The district court granted relief on the basis of Faith Center’s as applied challenge.
The district court based its order on four legal premises: (1) religious worship is speech protected by the First Amendment; (2) religious worship cannot be distinguished from other forms of religious speech; (3) the exclusion of religious worship from otherwise permissible speech of a religious nature constitutes viewpoint discrimination; (4) there was no compelling Establishment Clause concern to justify Faith Center’s exclusion.5
As the district court made clear, it proceeded on the basis that the afternoon “praise and worship” session constituted pure religious worship services.6 Faith Center did not dispute this contention because it argued that even if the afternoon session was mere religious worship, the court could not draw a constitutionally permissible distinction between afternoon worship and the rest of Faith Center’s religious speech activities. Thus, as the parties do, we understand the district court’s grant of preliminary injunctive relief to enjoin application of the County’s policy to bar religious worship services. This appeal followed.
II.
We have jurisdiction under 28 U.S.C. § 1292. We will reverse the grant of a preliminary injunction when the district court has abused its discretion or has based its decision on an erroneous legal standard or on clearly erroneous findings of fact. See Satava v. Lowry, 323 F.3d 805, 810 (9th Cir.2003). Application of er*906roneous legal principles by the district court is an abuse of discretion. See A & M Records, Inc. v. Napster, Inc., 239 F.3d 1004, 1013 (9th Cir.2001). Underlying issues of law are reviewed de novo, including the claim that the district court relied on an erroneous legal premise to arrive at its decision to grant a preliminary injunction. See id. Thus, we must determine “whether the court employed the appropriate legal standards governing the issuance of a preliminary injunction and whether the district court correctly apprehended the law with respect to the underlying issues in the case.” Sammartano v. First Judicial Dist. Court, 303 F.3d 959, 965 (9th Cir.2002) (internal quotation marks and citation omitted).
III.
A preliminary injunction may issue when the moving party demonstrates either “(1) a combination of probable success on the merits and the possibility of irreparable harm; or (2) that serious questions are raised and the balance of hardships tips in its favor.” A & M Records, Inc., 239 F.3d at 1013. “These formulations are not different tests but represent two points on a sliding scale in which the degree of irreparable harm increases as the probability of success on the merits decreases.” Associated Gen. Contractors of Cal. v. Coal, for Econ. Equity, 950 F.2d 1401, 1410, (9th Cir.1991) (internal quotation marks and citation omitted). Accordingly, “if the movant has a 100% probability of success on the merits, this alone entitles it to reversal of a district court’s denial of a preliminary injunction, without regard to the balance of the hardships.” Sammartano, 303 F.3d at 965 (internal quotation marks omitted).
Because the district court concluded that enforcement of the County’s library meeting room policy was substantially likely to violate Faith Center’s right to freedom of expression, the court also concluded that Faith Center had demonstrated the requisite irreparable harm. See Elrod v. Burns, 427 U.S. 347, 373, 96 S.Ct. 2673, 49 L.Ed.2d 547 (1976) (“The loss of First Amendment freedoms, for even minimal periods of time, unquestionably constitutes irreparable injury.”); Sammartano, 303 F.3d at 973 (“[A] party seeking preliminary injunctive relief in a First Amendment context can establish irreparable injury sufficient to merit the grant of relief by demonstrating the existence of a colorable First Amendment claim.” (internal quotation marks and citation omitted)). We agree that the existence of a colorable First Amendment claim in this case is sufficient to demonstrate irreparable injury. We therefore confíne our review to determining whether Faith Center has demonstrated a likelihood of success on the merits of its First Amendment “as applied” challenge.7
IV.
A.
As a preliminary matter, our inquiry ends if Faith Center’s religious services do not constitute “speech” subject to First Amendment protection. We conclude that Faith Center engaged in protected speech when its participants met in the Antioch Library for prayer, praise, and worship. See Widmar v. Vincent, 454 U.S. 263, 269, 102 S.Ct. 269, 70 L.Ed.2d 440 (1981) *907(“[RJeligious worship and discussion ... are forms of speech and association protected by the First Amendment.”); Good News Club v. Milford Cent. Sch., 533 U.S. 98, 111, 121 S.Ct. 2093, 150 L.Ed.2d 151 (2001) (finding that activities “quintessentially religious” in nature such as religious instruction, prayer, and discussion and recitation of the Bible, are protected speech); Lamb’s Chapel v. Center Moriches Union Free Sch. Dist., 508 U.S. 384, 393-94, 113 S.Ct. 2141, 124 L.Ed.2d 352 (1993) (finding that the presentation of cultural and educational subject matter from a religious perspective is speech protected by the First Amendment).
The Constitution, however, does not guarantee that all forms of protected speech may be heard on government property. “[T]he Government, ‘no less than a private owner of property, has power to preserve the property under its control for the use to which it is lawfully dedicated.’ ” Cornelius v. NAACP Legal Def. & Educ. Fund, 473 U.S. 788, 800, 105 S.Ct. 3439, 87 L.Ed.2d 567 (1985) (quoting Greer v. Spock, 424 U.S. 828, 836, 96 S.Ct. 1211, 47 L.Ed.2d 505 (1976)). The Supreme Court has adopted a forum analysis to balance “when the Government’s interest in limiting the use of its property to its intended purpose outweighs the interest of those wishing to use the property for other purposes.” United States v. Kokinda, 497 U.S. 720, 726, 110 S.Ct. 3115, 111 L.Ed.2d 571 (1990) (internal quotation marks and citation omitted). Thus, we must at the outset determine the nature of the forum established by the County when it opened the Antioch Library meeting room to various community groups.
We begin our forum analysis by “identifying] the nature of the forum” and “whether the forum [at issue] is public or non-public.” Cornelius, 473 U.S. at 797, 105 S.Ct. 3439. Forum analysis has traditionally divided government property into three categories: public fora, designated public fora, and nonpublic fora. Di-Loreto v. Downey Unified Sch. Dist. Bd. of Educ., 196 F.3d 958, 964 (9th Cir.1999). Once the forum is identified, we determine whether restrictions on speech are justified by the requisite standard. Cornelius, 473 U.S. at 797, 105 S.Ct. 3439.
Traditional public fora such as public streets and parks are locations that “by long tradition or by government fiat have been devoted to assémbly and debate.” Perry Educ. Ass’n v. Perry Local Educators’ Ass’n, 460 U.S. 37, 45, 103 S.Ct. 948, 74 L.Ed.2d 794 (1983). When the government intentionally dedicates its property to expressive conduct, it also creates a public forum. Id. Such designated public fora cannot be created by inaction; the government must “intentionally open[ ] a nontraditional forum for public discourse.” Cornelius, 473 U.S. at 802, 105 S.Ct. 3439. The ability of the government to limit speech in a traditional or designated public forum is sharply circumscribed. Content-based regulation is justified only when “necessary to serve a compelling state interest and [when] it is narrowly drawn to achieve that end.” Perry, 460 U.S. at 45, 103 S.Ct. 948. Content-neutral restrictions that regulate the time, place, and manner of speech are permissible so long as they are “narrowly tailored to serve a significant government interest, and[they] leave open ample alternative channels of communication.” Id.
Any public property that is not by tradition or designation a forum for public communication is classified as a non-public forum. See DiLoreto, 196 F.3d at 965. Regulation of speech in a nonpublic forum is subject to less demanding judicial scrutiny. “The challenged regulation need only be reasonable, as long as the *908regulation is not an effort to suppress the speaker’s activity due to disagreement with the speaker’s view.” Int’l Soc. for Krishna Consciousness v. Lee, 505 U.S. 672, 679, 112 S.Ct. 2701, 120 L.Ed.2d 541 (1992).
We have recognized that the Supreme Court, in decisions subsequent to Perry and Cornelius, has identified another category — the “limited public forum”— to describe a nonpublic forum that the government intentionally has opened to certain groups or for the discussion of certain topics. See DiLoreto, 196 F.3d at 965 (citing Rosenberger v. Rector & Visitors of the Univ. of Virginia, 515 U.S. 819, 829, 115 S.Ct. 2510, 132 L.Ed.2d 700 (1995)). Restrictions governing access to a limited public forum are permitted so long as they are viewpoint neutral and reasonable in light of the purpose served by the forum.8
B.
We conclude that the Antioch Library meeting room is a limited public forum and that enforcement of the County’s policy to exclude religious worship services from the meeting room is reasonable in light of the forum’s purpose. It is clear, and neither party contends otherwise, that the forum created by the County is neither a traditional public forum nor a nonpublic forum. Rather, the parties dispute whether the Antioch meeting room constitutes a designated or limited public forum.
In evaluating the type of forum at issue, we look to “the policy and practice of the government, the nature of the property and its compatibility with expressive activity, and whether the forum was designed and dedicated to expressive activity.” Children of the Rosary v. City of Phoenix, 154 F.3d 972, 976 (9th Cir.1998) (citing Cornelius, 473 U.S. at 802-03, 105 S.Ct. 3439); see also Am. Civil Liberties Union of Nev. v. City of Las Vegas, 333 F.3d 1092, 1098 (9th Cir.2003). The purpose of our inquiry is to discern the government’s intent in making the forum available for public use. See Cornelius, 473 U.S. at 802, 105 S.Ct. 3439.
The County’s library meeting room policy allows “[n]on-profit and civic organizations, for-profit organizations, schools and governmental organizations” to use a branch Library meeting room for “meetings, programs, or activities of educational, cultural or community interest.” Evidently, the County’s purpose was to invite the community at large to participate in use of the meeting room for expressive activity. In practice, the County has allowed a variety of community groups to hold meetings in the Antioch Library meeting room, including the Sierra Club for purposes of letter writing, Narcotics Anonymous for a recovery meeting, and *909the East Contra Costa Democratic Club to “let people learn about Democratic candidates and issues.”9
A policy with a broad purpose however is not dispositive of an intent to create a public forum by designation. In Good News Club, the Supreme Court adopted the Second Circuit’s conclusion that the State of New York had created a limited public forum when it made its public schools available for “social, civic and recreational meetings and entertainment events, and other uses pertaining to the welfare of the community.” Good News Club, 533 U.S. at 102, 106, 121 S.Ct. 2093 (internal quotation marks omitted). Other courts have interpreted similar broadly worded policies to create limited public fora. See Bronx Household of Faith v. Bd. of Ed. of City of New York, 331 F.3d 342, 346 (2d Cir.2003) (recognizing that the same New York State policy at issue in Good News Club created a limited public forum); Campbell v. St. Tammany Parish Sch. Bd., No. Civ. A. 98-2605, 2003 WL 21783317, at * 1 (E.D.La. July 30, 2003) (unpublished) (holding that school board’s policy of granting access for “civic and recreational meetings ... and other uses pertaining to the welfare of the community” created a limited public forum).10
Here, the County’s policy and practices make clear that the County did not intend for the Antioch Library meeting room to be open for indiscriminate use. The County’s policy excludes schools from using the meeting room “for instructional purposes as a regular part of the curriculum” and organizations who wish to engage in “religious services.” Additionally, the policy requires a potential user to submit an application describing the intended use and identifying the applicant. Thereafter, the application must be reviewed and approved in advance by the County. Requiring prior permission for access to forum demonstrates that a public forum has not been created by designation. See Cornelius, 473 U.S. at 803, 105 S.Ct. 3439. Finally, the policy requires an applicant to pay a fee for certain proposed uses. By charging a fee in certain circumstances, the County has demonstrated its desire to limit access to the library meeting room for certain purposes and speakers.
The record indicates that the County has consistently applied its policy restrictions. Faith Center does not contend that the County has ever failed to screen an application or that the County has granted access to an applicant on a non-policy basis. See Hopper, 241 F.3d at 1076 (“[C]on-sistency in application is the hallmark of any policy designed to preserve the nonpublic status of a forum.”)
The nature of the forum also supports the conclusion that, although the community at large has been invited to use the room, the library meeting room was not intended to be open for unlimited public expression. A library is quintessentially “a place dedicated to quiet, to knowledge, and to beauty,” Broum v. Louisiana, 383 U.S. 131, 142, 86 S.Ct. 719, 15 L.Ed.2d 637 (1966); where “the worthy missions of facilitating learning and cultural enrich*910ment” are fostered, United States v. Am. Library Ass’n, 539 U.S. 194, 203, 123 S.Ct. 2297, 156 L.Ed.2d 221 (2003); and whose “very purpose is to aid in the acquisition of knowledge through reading, writing and quiet contemplation,” Kreimer, 958 F.2d at 1261.
We also note that the Antioch meeting room is located within the Antioch Branch Library itself, that the meeting-room is accessible during normal operating hours when other library patrons are present, and that sound can be heard by nonparticipants. Thus, while the Library meeting room is compatible with different kinds of expressive activity such as a group discussion or lecture, we are mindful that the forum was not intended to undermine the library’s primary function as a venue for reading, writing, and quiet contemplation. The County’s policy delineating the speakers and uses appropriate for the Library meeting room, its consistent screening of applications, and its requirement of a fee in limited circumstances, underscores our conclusion that the Antioch forum was not dedicated for indiscriminate use. We therefore hold that the Antioch Library meeting room is a limited public forum whose restrictions to access may be “based on subject matter ... so long as the distinctions drawn are reasonable in light of the purpose served by the forum and are viewpoint neutral.” Cornelius, 473 U.S. at 806, 105 S.Ct. 3439. We proceed next to the question of whether the County’s decision to prohibit Faith Center from conducting religious worship services in the Library meeting room is reasonable in light of the purpose served by the forum.
C.
“[Reasonableness analysis focuses on whether the limitation is consistent with preserving the property for the purpose to which it is dedicated.” DiLoreto, 196 F.3d at 967 (internal quotation marks omitted). Although the actual forum is a library meeting room, the nature and function of the County’s public library as a whole is relevant in evaluating the reasonableness of the County’s exclusions. See id. at 968.
The purpose of the County’s library policy is to make its library meeting rooms available as a community resource for different kinds of expressive activity such as meetings, discussions, lectures, and other “meetings, programs, or activities of educational, cultural or community interest.” The County’s policy regulates use of the meeting room to preserve the character of the forum as a common meeting space, an alternative to the community lecture hall, the corporate board-room, or the local Starbucks. The library policy, for example, prohibits schools from using the meeting room as a regular part of the school’s curriculum. The County’s exclusion of schools is reasonable in light of its purpose. To allow the meeting room to be converted into a classroom would transform the character of the forum from a community meeting room to a public school.
By the same token, the County’s decision to exclude Faith Center’s religious worship services from the meeting room is reasonable in light of the library policy so that the Antioch forum is not transformed into an occasional house of worship. Faith Center acknowledges that it seeks to reach out to those individuals who might not enter a traditional church building, and to bring the evangelical church experience to them. We see nothing wrong with the County excluding certain subject matter or activities that it deems inconsistent with the forum’s purpose, so long as the County does not discriminate against a speaker’s viewpoint. To conclude that the County’s *911exclusion of religious worship services from its government buildings is unreasonable would result in the “remarkable proposition that any public [building] opened for civic meetings must be opened for use as a church, synagogue, or mosque.” Good News Club, 533 U.S. at 139, 121 S.Ct. 2093 (Souter, J., dissenting).
The County also has a reasonable interest in limiting the Library meeting room to uses that could potentially interfere with the primary function of the library. In DiLoreto, a school district policy excluded subject matter that was deemed too sensitive or controversial from advertisements on a high school’s baseball fence. 196 F.3d at 966. “The District’s concerns regarding disruption and potential controversy” were found reasonable in light of the circumstance of having a limited forum (the advertisement fence) within a public secondary school. Id. at 968. We thus upheld the exclusion of an advertisement containing the text of the Ten Commandments because it was inconsistent with the limited purpose served by the forum.
Here too, the County has a legitimate interest in screening applications and excluding meeting room activities that may interfere with the library’s primary function as a sanctuary for reading, writing, and quiet contemplation. The County reasonably could conclude that the controversy and distraction of religious worship within the Antioch Library meeting room may alienate patrons and undermine the library’s purpose of making itself available to the whole community. See id. We therefore conclude that the County’s prohibition on religious worship services is reasonable in light of the purpose served by the Library meeting room.11
V.
Although the County’s policy, and its decision to bar Faith Center from using the Library meeting room to conduct religious worship services, is reasonable in light of the forum’s purpose, Faith Center is likely to succeed on the merits of its First Amendment claim if it can establish that the County discriminated against it because of its religious viewpoint.
In a limited public forum, the government is free to reserve access to the forum “for certain groups or for the discussion of certain topics.” Rosenberger, 515 U.S. at 829, 115 S.Ct. 2510. Access may not be restricted, however, if the “rationale for the restriction” is the “specific motivating ideology or the opinion or perspective of the speaker.” Id. We must identify whether the County’s exclusion of Faith Center’s religious worship services from the Library meeting room is “content discrimination, which may be permissible if it preserves the purpose of that limited forum, [or] viewpoint discrimination, which is presumed impermissible when directed against speech otherwise within the forum’s limitations.” Id. at 829-30, 115 S.Ct. 2510.
We hold that the exclusion of Faith Center’s religious worship services from the Antioch Library meeting room is a permissible limitation on the subject matter that may be discussed in the meeting room, and that it is not suppression of a prohibited perspective from an otherwise permissible topic. In so holding, we address two arguments raised by Faith Center that bear directly on our analysis. First, Faith Center contends that the prohibition on religious worship services is *912impermissible viewpoint discrimination because “prayer, praise and worship” is an educational, cultural, and community-related activity that has been suppressed due to Faith Center’s religious perspective.
Second, Faith Center argues that its religious worship cannot be distinguished from other religious speech that is permitted in the Antioch Library, and to attempt a judicially enforceable distinction would entangle the government with religion in a manner forbidden by the Establishment Clause.
A.
We first address whether the County has discriminated on the basis of content or viewpoint. “Content discrimination occurs when the government chooses the subjects that may be discussed, while viewpoint discrimination occurs when the government prohibits speech by particular speakers, thereby suppressing a particular view about a subject.” Giebel v. Sylvester, 244 F.3d 1182, 1188 (9th Cir.2001) (internal quotation marks omitted). The distinction between regulation on the basis of subject matter or viewpoint, however, “is not a precise one,” Rosenberger, 515 U.S. at 831, 115 S.Ct. 2510, and as this court has recognized, “the level at which ‘subject matter’ is defined can control whether discrimination is held to be on the basis of content or viewpoint,” Giebel, 244 F.3d at 1188 n. 10; see also Robert C. Post, Subsidized Speech, 106 YALE L.J. 151, 166 & n. 96 (1996).
The Supreme Court’s decision in Boos v. Barry exemplifies the difficulty of identifying whether a regulation excludes an entire category of speech or restricts a prohibited viewpoint. 485 U.S. 312, 108 S.Ct. 1157, 99 L.Ed.2d 333 (1988) (plurality opinion). In Boos, the Court reviewed a statute that prohibited the display of signs disparaging a foreign government from within 500 feet of that government’s embassy. The plaintiffs argued that the statute discriminated on the basis of viewpoint because speech that favored the foreign government was permitted. From plaintiffs’ standpoint, the subject matter regulated by the statute was ‘speech concerning a foreign government’ and the restriction improperly favored one side of the debate. The Court rejected this argument by defining the subject matter of the regulation at a different level of generality: speech against foreign governments. Because the statute excluded this entire category of speech without regard to any particular foreign government or criticism, a plurality of the Court concluded that the statute was viewpoint-neutral. Id. at 319, 108 S.Ct. 1157.
In Lamb’s Chapel, the Court articulated a test for distinguishing between content and viewpoint discrimination. A religious group seeking to show a film series on child rearing from a Christian perspective was denied access to a school facility because of the school district’s policy barring use of the rooms for religious purposes. The Court unanimously held that the school district “discriminate[d] on the basis of viewpoint [by] permit[ting] school property to be used for the presentation of all views about family issues and child rearing except those dealing with the subject matter from a religious standpoint.” 508 U.S. at 393, 113 S.Ct. 2141. The test is whether the government has excluded perspectives on a subject matter otherwise permitted by the forum.
The Court applied that test in Rosenber-ger. In Rosenberger, the Court considered whether a University of Virginia policy of excluding religious publications from eligibility for student funds was viewpoint discrimination or a content-based exclusion. The University sought to avoid a possible Establishment Clause violation by exclud*913ing funding that supported “religious activity,” including student publications that espoused and promoted religious beliefs. See 515 U.S. at 825, 115 S.Ct. 2510. The majority determined, however, that “the University [did] not exclude religion as a subject matter but selected] for disfavored treatment those student journalistic efforts with religious editorial viewpoints.” Id. at 831, 115 S.Ct. 2510. Because other student publications were free to discuss the topic of religion from a myriad of views other than the prohibited perspective, the University had discriminated on the basis of viewpoint. Id.
Most recently, in Good News Club v. Milford Central School, the Court held that a school district engaged in viewpoint discrimination when it refused to allow a Christian children’s club (“Club”) to offer a religious perspective on moral and character development in a school forum that was open to wide community involvement. The school district allowed its facilities to be used for activities “pertaining to the welfare of the community,” and the facilities were available to any group that promoted the moral and character development of children. See 533 U.S. at 108, 121 S.Ct. 2093. Comparing the circumstances to Lamb’s Chapel, the Court found that the school district had discriminated on the basis of viewpoint by denying the Club the opportunity to teach moral and character development to children from a religious perspective. See id. at 111, 121 S.Ct. 2093 (“What matters for purposes of the Free Speech Clause is that we can see no logical difference in kind between the invocation of Christianity by the Club and the invocation of teamwork, loyalty, or patriotism by other associations to provide a foundation for their lessons.”). Once again, the focus was on whether some other group had been permitted to engage in the same kind of speech activity from a perspective other than the prohibited one.
Good News Club is notable for two other reasons. First, the Court concluded that even activities that are “quintessentially religious” can be used to further the purpose of moral instruction and character development. In Good News Club, the Club taught morality and character development by singing songs, relating stories from the Bible, reciting verses, memorizing Scripture, and prayer. See id. at 103, 121 S.Ct. 2093. For the Court’s purposes however, “[t]he only apparent difference between the activity of Lamb’s Chapel and the activities of the Good News Club is that the Club chooses to teach moral lessons from a Christian perspective through live storytelling and prayer, whereas Lamb’s Chapel taught lessons through films.” Id. at 110, 121 S.Ct. 2093.
Second, the Court drew a distinction between the Club’s activities and “mere religious worship, divorced from any teaching of moral values.” Id. at 112, 121 S.Ct. 2093 n. 4. Although the school district contended that the Club’s activities constituted religious worship, the Court rejected that characterization and noted that the court of appeals made no such determination. The Court drew a line at religious worship because it did not regard worship in this case as merely a “viewpoint from which ideas are conveyed.” Id. To the contrary, pure religious worship held a purpose unto itself, and it exceeded the boundaries of a forum limited to a discussion of the moral and character development of children. See id. at 138 n. 3, 533 U.S. 98, 121 S.Ct. 2093, 150 L.Ed.2d 151 (Souter, J., dissenting).12
*914Turning to Faith Center’s argument, we disagree that prohibiting religious worship services in the Antioch Library meeting room constitutes viewpoint discrimination. The test, as we have articulated, is whether the government has excluded a perspective on a subject matter otherwise permitted in the forum. To determine whether “religious worship” is a perspective on an allowable topic, we are guided by the Court’s approach in Good News Club and draw reference from events and activities that have been hosted at the Antioch meeting room forum. See id. at 108, 121 S.Ct. 2093.
As noted above, the County acknowledged that Faith Center’s morning activities on May 29, 2004 were permissible under the County’s current policy. According to Faith Center’s flyer describing the day’s events, the morning “Wordshop” consisted of “ ‘The Making of an Intercessor,’ an Endtime call to Prayer for every Believer, and how to pray fervent, effectual Prayers that God hears and answers.” In other words, the morning workshop was devoted to the topic of communication and how to communicate effectively with one’s God. Although Faith Center’s activities may have included “quintessentially religious” speech such as a call to prayer, Good News Club makes clear that such speech in furtherance of communicating an idea from a religious point of view cannot be grounds for exclusion.
It is clear that “communication” is a permissible topic of discussion in the Antioch Library meeting room. If the Antioch Speech and Debate club applied to use the meeting room to discuss the art of oratory and effective communication of secular subjects, the County would not likely reject such a proposal. It would therefore be viewpoint discrimination for the County to exclude Faith Center’s perspective on the subject of communication because of the religious content of Faith Center’s speech.
Other activities that occur at Faith Center’s meetings are also permissible in the Antioch meeting room. Faith Center explains that meeting participants sometimes “engage in discussing the Bible and other religious books [as well as] teaching, praying, singing, sharing testimonies, sharing meals, and discussing social and political issues.” These activities convey a religious perspective on subjects that are or have been permitted in the Antioch Library meeting room, such as a discussion of the Bible, discussions of social and political issues, and sharing life experiences.13
The County, for example, permits meetings by the East Contra Costa Democratic Club to “let people learn about Democratic candidates and issues”- — in essence to discuss social and political issues from the standpoint of the Democratic Party. A Narcotics Anonymous recovery meeting includes sharing personal life experiences similar to sharing testimonials of one’s personal experiences with God and faith. A letter-writing campaign by the Sierra Club involves the discussion and communication of matters of social and political interest to its members. Discussions of the Bible and other religious and literary texts are also clearly permissible in the library. Thus, to exclude Faith Center from discussing topics that are appropriate to the forum because of a prohibited reli*915gious perspective would constitute viewpoint discrimination in violation of the First Amendment.
Faith Center’s afternoon activities on May 29th, however, did not consist of religious viewpoint activities. Faith Center occupied the Antioch forum expressly for “praise and worship” and in doing so Faith Center exceeded the boundaries of the library’s limited forum. The district court understood, and Faith Center did not dispute, the contention that the afternoon activities constituted pure religious worship services. Rather, Faith Center argued before the district court that its religious worship could not be distinguished from the rest of its religious speech, and for the court to make such a distinction was constitutionally impermissible.
Pure religious worship, however, is not a secular activity that conveys a religious viewpoint on otherwise permissible subject matter. For every other topic of discussion that Faith Center engages in — the Bible, communication, social and political issues, life experiences — religious and nonreligious perspectives exist. The same can be said for moral and character development in Good News Chib, child rearing in Lamb’s Chapel, and the topic of religion itself in Rosenberger.
Religious worship, on the other hand, is not a viewpoint but a category of discussion within which many different religious perspectives abound. If the County had, for example, excluded from its forum religious worship services by Mennonites, then we would conclude that the County had engaged in unlawful viewpoint discrimination against the Mennonite religion. But a blanket exclusion of religious worship services from the forum is one based on the content of speech.
Faith Center contends that because a religious worship service is an “educational, cultural and community related” activity, excluding religious worship services from the forum when other community-related activities are permitted amounts to viewpoint discrimination. Although religious worship is an important institution in any community, we disagree that anything remotely community-related must therefore be granted access to the Antioch Library meeting room. That argument was rejected in Good News Club when the Court distinguished the Club’s activities from “mere religious worship” and implicitly acknowledged that religious worship exceeded the boundaries of the limited public forum. See Good News Club, 533 U.S. at 112 n. 4, 121 S.Ct. 2093.14
Faith Center’s reliance on the Second Circuit’s decision in Bronx Household of Faith is misplaced. In Bronx Household of Faith, an evangelical Christian church sought access to a public school building for Sunday meetings that consisted of singing Christian hymns, prayer, Biblical preaching and teaching, communion, and social fellowship. 331 F.3d at 347. The court concluded that, like Good News Club, the proposed meetings did not “constitute only religious worship, separate and apart from any teaching of moral values.” Id. at 354. The court was guided by Justice Souter’s description of the Club’s activities *916in Good News Club.15 Justice Souter characterized the Club’s meetings as “an evangelical service of worship,” combining teaching with “elements of worship.” 533 U.S. at 138 n. 3, 121 S.Ct. 2093. The court found that the proposed meetings in Bronx Household of Faith were materially indistinguishable from Good News Club’s activities and therefore Good News Club controlled the outcome of its case.
Bronx Household of Faith is inapposite because here we simply do not have “elements of worship” that further secular goals. Faith Center’s afternoon activities on May 29, 2004, as described by Faith Center itself, consisted entirely of praise and religious worship. The Second Circuit made clear that its “ruling [was] confined to the district court’s finding that the [church’s] activities ... [were] not simply religious worship, divorced from any teaching of moral values or other activities permitted in the forum.” 331 F.3d at 354. Bronx Household of Faith is also distinguishable because of the nature of the forum. There, the church sought to rent empty school rooms for its Sunday meetings away from other public activity. The Antioch Library meeting room, on the other hand, is in the Antioch Branch Library and is available only during the Library’s operating hours when other library patrons are present. The propriety of religious worship services varies by the different circumstances of each forum.16
B.
We turn to Faith Center’s second argument, that the prohibition on religious services in the Antioch forum is viewpoint discrimination because religious worship cannot be distinguished from other permissible forms of religious speech. According to Faith Center, to enforce such a distinction, would entangle the government with religion in a manner forbidden by the Establishment Clause.
Faith Center relies on Widmar v. Vincent for support. In Widmar, a religious student organization sought access to state university facilities for religious worship and discussion. The University made its facilities available for activities by registered student groups but prohibited the use of University buildings “for purposes of religious worship or religious teaching.” 454 U.S. at 265, 102 S.Ct. 269. The Court held that the University had created a public forum and therefore it could only “justify discriminatory exclusion from a public forum based on the religious content of the group’s intended speech” by showing that its regulation was necessary to serve a compelling state interest and narrowly drawn to achieve that end. Id. at 269-70, 102 S.Ct. 269. The University regulation did not survive under the heightened judicial scrutiny.
In dicta that was not central to the Court’s holding, Justice Powell discussed the difficulty he had with the dissent’s *917contention that a distinction should be made between religious worship and other kinds of religious speech:
First, the dissent fails to establish that the distinction has intelligible content. There is no indication when “singing hymns, reading scripture, and teaching biblical principles,” cease to be “singing, teaching, and reading” — all apparently forms of “speech,” despite their religious subject matter — and become unprotected worship.
Second, even if the distinction drew an arguably principled line, it is highly doubtful that it would lie within the judicial competence to administer. Merely to draw the distinction would require the university — and ultimately the courts — to inquire into the significance of words and practices to different religious faiths, and in varying circumstances by the same faith. Such inquiries would tend inevitably to entangle the State with religion in a manner forbidden by our cases.
Id. at 269, 102 S.Ct. 269 n. 6 (internal citations omitted).
Faith Center echoes the same arguments. Faith Center asks how the County, or courts for that matter, can draw a line between permissible components of religious speech — singing, sharing testimonials, even prayer in the context of discussing how to communicate with God — and impermissible religious worship. Further, Faith Center argues that the government and courts are not competent to identify when certain expressive activity is religious worship. To enforce such a distinction would foster an excessive government entanglement with religion. See Lemon v. Kurtzman, 403 U.S. 602, 612-13, 91 S.Ct. 2105, 29 L.Ed.2d 745 (1971).
As Justice Scalia noted in Good News Club, however, “[w]e have drawn a different distinction — between religious speech generally and speech about religion — but only with regard to restrictions the State must place on its own speech, where pervasive state monitoring is unproblematic.” 533 U.S. at 126 n. 3, 121 S.Ct. 2093. School officials routinely draw such distinctions in public schools where the subject of religion may be taught but religious speech is barred from the government speaker. See Santa Fe Indep. Sch. Dist. v. Doe, 530 U.S. 290, 120 S.Ct. 2266, 147 L.Ed.2d 295 (2000); Peloza v. Capistrano Unified Sch. Dist., 37 F.3d 517 (1994). The distinction to limit certain kinds of religious speech is also made for government employees in the workplace. See Berry v. Dep’t of Soc. Serv., 447 F.3d 642, 655 (9th Cir.2006) (“Permitting appellants to evangelize while providing services to clients would jeopardize the state’s ability to provide services in a religion-neutral matter.” (internal citation omitted)).
We also have recognized that school officials may draw a distinction between different kinds of private religious speech in order to preserve the intended purpose of a limited public forum. In Hills, the court held that a school district’s policy to distribute summer camp brochures to students could not exclude a brochure that advertised for a religious summer camp. See 329 F.3d at 1051. The court noted, however, that the school district “is not obligated to distribute material that, in the guise of announcing an event, contains direct exhortations to religious observance; this exceeds the purpose of the forum the District created.” Id. at 1053. We have elsewhere endorsed the principle that the government can distinguish and exclude proselytizing religious speech to preserve the purpose for a limited forum. See, e.g., Prince v. Jacoby, 303 F.3d 1074, 1086-87 (9th Cir.2002) (finding that while student *918religious group must be given equal access to school’s public address system to announce its activities, the group may be barred from doing so to “pray and proselytize”); Lassonde v. Pleasanton Unified Sch. Dist., 320 F.3d 979, 980 (9th Cir.2003) (permitting discussion of religious beliefs in a high school graduation speech but prohibiting “proselytizing”); Cole v. Oroville Union High Sch. Dist., 228 F.3d 1092, 1104 (9th Cir.2000) (upholding school district’s refusal to allow valedictorian to give a “sectarian, proselytizing speech” at graduation ceremonies).17
This case differs from the aforementioned cases in that the County may not exclude proselytizing speech from the Antioch forum if that speech helps to convey a viewpoint about an otherwise appropriate topic. For example, Faith Center’s morning “Wordshop” includes a call to prayer — speech that may be properly characterized as proselytizing. Nonetheless, because this proselytizing activity also furthers the discussion about communication and communicating with a higher authority, it cannot be grounds for exclusion.
The distinction to be drawn here is thus much more challenging — one between religious worship and virtually all other forms of religious speech — and one that the government and the courts are not competent to make. That distinction, however, was already made by Faith Center itself when it separated its afternoon religious worship service from its morning activities. Faith Center admits that it occupied the Antioch forum in the afternoon of May 29, 2004 expressly for “praise and worship.” The County may not be able to identify whether Faith Center has engaged in pure religious worship, but Faith Center can and did.18
VI
We therefore conclude that prohibiting Faith Center’s religious worship services from the Antioch meeting room is a permissible exclusion of a category of speech that is meant to preserve the purpose behind the limited public forum. Religious worship services can be distinguished from other forms of religious speech by the adherents themselves. Because the district court erred in enjoining the County from applying its library meeting room policy to exclude Faith Center’s religious worship services, we reverse the injunction in part.
The County, however, acknowledged that its prohibition on religious worship services could not be applied to bar Faith Center from engaging in secular activities that express a religious viewpoint. Indeed, the County informed the district court that Faith Center’s morning “wordshop” on May 29, 2004 was a permissible activity even though its purpose was to teach people how to pray or communicate with a divine presence. To that end, the County invited the district court to craft an injunction that ensured Faith Center’s right to conduct activities in the *919meeting room that express a religious viewpoint, and allowed the County to exclude religious worship services. We note that the County offered several proposals for crafting a preliminary injunction that would achieve these balancing objectives and avoid the pitfalls of excessive government entanglement.19 The district court, however, did not consider the County’s suggestion regarding the scope of the injunction. We therefore vacate and remand so that the district court can craft an appropriate injunction after soliciting the views of the parties.
REVERSED in part, VACATED in part, and REMANDED for further proceedings.20
. Faith Center contends that out of consideration for library patrons, the meeting participants did not use musical instruments or amplified sound. The County explains that the Antioch Library meeting room is not soundproof and the May 29 service could be heard outside the meeting room. The County does not argue that excessive noise was a problem.
. Faith Center named as defendants Federal D. Glover (chair of the County Board of Supervisors); Mark DeSaulnier, John M. Gioia, Millie Greenberg, and Gayle B. Uilkema (members of the County Board of Supervisors); John Sweeten (County Administrator); Anne Cain (County Librarian); Patty Chan (Senior Librarian of the Antioch Branch); and Laura O'Donahue (Administrative Deputy Director of the Antioch Branch) (collectively the “County”).
.Faith Center also alleged that enforcement of the Library policy was hostile to religion in violation of the Establishment Clause; that the Library policy was facially invalid because the County had created a designated public forum and the policy’s regulation of speech was not justified by a compelling governmental interest; and that the County violated Faith Center's right to equal protection. The district court did not address these separate claims.
. Although the County applied the "religious purposes" policy in existence at the time it cancelled the July 31st meeting, the County has consistently maintained that it would bar religious worship services from the library meeting room under the revised policy.
. In light of the district court’s determination that the County discriminated against Faith Center's speech on the basis of viewpoint, the court did not address the nature of the forum created by the County’s policy of opening its library meeting rooms to the public.
. The transcripts of the preliminary injunction hearing show that the district court understood that the afternoon session constituted pure religious worship services, even as Faith Center’s other activities earlier in the day did not:
[Counsel for the County]: I have to take issue a little bit with the characterization that it is defendants who have characterized what Faith Center is doing as worship. Faith Center has characterized it that way, your honor.
The Court: I know. They are making the argument even assuming it’s worship. That gets into a set of new questions.
The Court: What is your bottom line? Is your bottom line then the Court cannot issue any injunction which has the effect of precluding, as you would call it or the courts call it, mere worship in the library rooms?
[Counsel for Faith Center]: That’s right, your honor.
The dissent dismisses Faith Center's representation at the preliminary injunction hearing. See Dissent Op., at 922-23 n. 2. However, the representation is consistent with other evidence in the record that Faith Center in*906tended its afternoon session to consist of religious worship services. See supra at 903-04.
. Because we conclude that the district court erred in granting relief on the basis of Faith Center's First Amendment as applied challenge, we need not address Faith Center's other constitutional arguments. See supra note 3. Upon remand, the district court may address these claims in the first instance.
. We have previously noted that "[t]he contours of the terms 'designated public forum' and 'limited public forum' have not always been clear.” DiLoreto, 196 F.3d at 965 n. 4. The terms are not interchangeable. A limited public forum is a sub-category of the designated public forum, where the government opens a nonpublic forum but reserves access to it for only certain groups or categories of speech. Hopper v. City of Pasco, 241 F.3d 1067, 1074-75 (9th Cir.2001). In a limited public forum, we review restrictions on speech that are viewpoint neutral for their reasonableness. Other courts follow the same practice. See, e.g., Bowman v. White, 444 F.3d 967, 975-76 (8th Cir.2006) (eschewing the terminology of designated or limited public forum in favor of a designated public forum classified as either of a "limited” or "unlimited” character); Warren v. Fairfax County, 196 F.3d 186, 193-94 (4th Cir.1999) (en banc); Kreimer v. Bureau of Police of Morristown, 958 F.2d 1242, 1261 & n. 21 (3d Cir.1992); Travis v. Owego-Apalachin Sch. Dist., 927 F.2d 688, 692 (2d Cir.1991).
. Faith Center offers examples of other applicants seeking access to other library meeting rooms in the County. As the district court correctly noted, however, the relevant forum is "defined by the access sought by the speaker,” DiLoreto, 196 F.3d at 965, and in this case the forum is the Antioch Library meeting room.
. We have also interpreted policies with a “broad purpose” to nevertheless create a limited public forum. See, e.g., Hills v. Scottsdale Unified Sch. Dist., 329 F.3d 1044, 1051 (9th Cir.2003) (holding that school policy to distribute flyers about summer activities that are "of interest to school-children” established a limited public forum).
. The County, however, acknowledges that it may not bar Faith Center from using the Library meeting room to conduct activities that express a religious viewpoint on otherwise permissible subject matter.
. It should be noted that Justice Scalia’s concurrence embraced the position that the majority was not willing to take. Justice Sca-lia argued that a distinction could not be made between the Club’s activities and religious worship, and that in any event, the *914forum could not restrict religious worship from taking place there. See id. at 125-26, 121 S.Ct. 2093.
. Although the library meeting room policy refers to implementing rules and regulations, those rules and regulations were not a part of the district court record. We therefore refrain from commenting on the permissibility of singing, eating, and drinking in the Antioch Library meeting room.
. It is difficult to imagine moreover that religious worship could ever truly be divorced from moral instruction or character development. That is not what the majority in Good News Club meant when it wrote: “we conclude that the Club's activities do not constitute mere religious worship, divorced from any teaching of moral values.” See id. That statement must be taken in its proper context. The defendant district opened the forum in part for the moral and character development of children. As here, pure religious worship was too tenuously associated to the forum’s purpose.
. The court noted that the majority accepted Justice Souter's recitation of the Club’s activities as accurate. See Good News Club, 533 U.S. at 112 n. 4, 121 S.Ct. 2093.
. Indeed, the unique factual circumstances of the County’s limited forum set this case apart from the cases primarily relied upon by Faith Center to demonstrate the existence of viewpoint discrimination. See, e.g., Good News Club, 533 U.S. at 103, 121 S.Ct. 2093; Lamb’s Chapel, 508 U.S. at 386, 113 S.Ct. 2141; Bronx Household of Faith, 331 F.3d at 345; Campbell, 2003 WL 21783317 at * 1. In Concerned Women for America v. Lafayette County, 883 F.2d 32, 33 (5th Cir.1989), the plaintiffs sought access to an auditorium rather than a meeting room at a public library. Cf. Southeastern Promotions, Ltd. v. Conrad, 420 U.S. 546, 555, 95 S.Ct. 1239, 43 L.Ed.2d 448 (1975) (municipal auditorium was a public forum whose size and design made it conducive for expressive conduct).
. The United States, as amicus curiae in support of Faith Center, argues that these school cases are distinguishable because they involve religious speech broadcast to a captive audience. We agree that the government may be justified in excluding proselytizing speech from its limited fora. The point remains, however, that the government is capable of identifying proselytizing religious speech or speech that simply has aspects of religious worship.
. The dissent raises the specter of inevitable government entanglement when a County librarian encounters some future applicant who is less than candid about its religious worship activities. See Dissent Op. at 925-26. We need not speculate about those possibilities. On the limited evidentiary record and in light of the procedural posture of this case, we decide only that which is before us.
. At the preliminary injunction hearing, the County proposed that its meeting room application be altered to include a certification by the applicant that the meeting room will not be used for religious services. The County elaborated that a certification would allow it to rely on the honesty of the applicant while avoiding any potential issues of entanglement. We express no opinion on the merits of such a proposal.
. In light of our conclusions, we need not address whether the County has a necessary and compelling interest in excluding religious worship services from its library meeting rooms to avoid a violation of the Establishment Clause.