The “Three Strikes” law (Pen. Code, § 667, subds. (b)-(i))1 provides that a juvenile adjudication is a “strike” only if, during the proceedings leading to the adjudication, the juvenile “was found to be a fit and proper subject to be dealt with under the juvenile court law.” (§ 667, subd. (d)(3)(C).) Such a finding is made at a hearing under Welfare and Institutions Code section 707, when the juvenile court, in considering a request by the prosecutor that the juvenile be tried as an adult, determines that the juvenile is “a fit and proper subject to be dealt with under the juvenile court law.” (Welf. & Inst. Code, § 707, subd. (c).) Thus, in my view, a juvenile adjudication is not a “strike” unless, during the proceedings leading to the adjudication, the court made a finding of “fitness” under section 707 of the Welfare and Institutions Code.
In this case, the prosecution alleged two prior juvenile adjudications as “strikes.” Neither of these adjudications resulted from proceedings in which the prosecutor asked that the minor be tried as an adult; thus, in neither proceeding did the juvenile court find that the minor was “a fit and proper subject to be dealt with under the juvenile court law,” as required by the Three Strikes law. Nevertheless, the majority holds that each adjudication is *1109a “strike.” It reaches this result by ignoring the plain meaning of section 667, subdivision (d)(3)(C), as well as established rules of statutory construction.
I
Defendant was charged with murder (§ 187) and attempted murder (§§ 187/664). Also alleged were three prior “strikes” under the Three Strikes law: an adult conviction for robbery (§ 211), and juvenile adjudications for residential burglary (§ 459) and felonious assault (§ 245). Defendant moved to have the juvenile adjudications stricken on a variety of grounds, one of which was that in neither juvenile adjudication did the trial court make a finding that defendant was “a fit and proper subject to be dealt with under the juvenile court law.” (§ 667, subd. (d)(3)(C).) The prosecution conceded that no such finding of fitness appeared on the record of either case, but argued that such a finding is “inherent” in every juvenile case in which the juvenile court finds true the allegations of a delinquency petition, and the minor is either adjudged or continues to be a ward of the court. The trial court granted defendant’s motion, ordering the adjudications stricken. The prosecution appealed. The Court of Appeal held that a juvenile adjudication may be a “strike” even if the juvenile court made no explicit finding that the minor was fit to be dealt with under juvenile court law. This court granted review.
II
Under the Three Strikes law, three types of qualifying offenses may be considered as “strikes”: (1) an adult conviction for a California crime listed in section 667.5, subdivision (c) as a violent felony, or listed in section 1192.7, subdivision (c) as a serious felony; (2) an adult conviction for a crime that was committed outside of California and includes all the elements of a crime listed under our state statutes as a violent or serious felony, and (3) certain prior juvenile adjudications. (§ 667, subd. (d).) The third category is at issue here.
Under section 667, subdivision (d)(3), a juvenile adjudication must satisfy four criteria to qualify as a strike: “A prior juvenile adjudication shall constitute a prior felony conviction for purposes of sentence enhancement if: [ID (A) The juvenile was 16 years of age or older at the time he or she committed the prior offense. [<fl] (B) The prior offense is listed in subdivision (b) of Section 707 of the Welfare and Institutions Code or described in paragraph (1) [California convictions for serious or violent felonies] or (2) [out-of-state convictions for serious or violent felonies] as a felony. [<]D (C) The juvenile was found to be a fit and proper subject to be dealt with *1110under the juvenile court law. [f] (D) The juvenile was adjudged a ward of the juvenile court within the meaning of Section 602 of the Welfare and Institutions Code because the person committed an offense listed in subdivision (b) of Section 707 of the Welfare and Institutions Code.” (Italics added.)
What did the Legislature mean when it required that, to qualify as a “strike,” the adjudication be one in which “the juvenile was found to be a fit and proper subject to be dealt with under the juvenile court law?” As I stated at the outset, such a finding is made only at a so-called “fitness” hearing under Welfare and Institutions Code section 707. Subdivision (c) of that statute authorizes the prosecutor in any juvenile delinquency matter to request a hearing to determine whether the minor is “a fit and proper subject to be dealt with under the juvenile court law.”2 If, at the hearing, the juvenile court makes a finding of unfitness, the pending charge is, as a general rule, transferred to adult court, and the minor is tried as an adult for the offense charged. (Welf. & Inst. Code, § 707.01.) If, on the other hand, the juvenile court finds the minor fit to be dealt with under juvenile court law, the charges are disposed of in juvenile court.
When the Legislature drafted the juvenile “strike” provision embodied in subdivision (d)(3)(C) of section 667, it used the identical words—“a fit and proper subject to be dealt with under the juvenile court law”—as in Welfare and Institutions Code section 707, describing the finding that the juvenile court must make at a fitness hearing. This creates a strong inference of the Legislature’s intent, in subdivision (d)(3)(C), to have qualify as “strikes” only those juvenile adjudications arising from proceedings in which the juvenile court, after conducting a fitness hearing under Welfare and Institutions Code section 707, found the minor to be “a fit and proper subject to be dealt with under the juvenile court law.” (§ 707, subd. (c).)
I find additional support for this conclusion in the Legislature’s express reference to Welfare and Institutions Code section 707 in the “strike” provisions in Penal Code section 667 immediately before and after subdivision (d)(3)(C). Thus, subdivision (d)(3)(B) of section 667 provides that to qualify as a “strike,” the juvenile adjudication must be one of the offenses “listed in subdivision (b) of Section 707 of the Welfare and Institutions Code,” or it must be listed elsewhere as a violent or serious felony. Similarly, under subdivision (d)(3)(D) of Penal Code section 667, a juvenile *1111adjudication is a “strike” only if the juvenile “was adjudged a ward of the juvenile court . . . [for committing] an offense listed in subdivision (b) of Section 707 of the Welfare and Institutions Code.”
Some 16-year-old delinquents are already dangerous, violent criminals. But there may be others whose acts reflect youthful immaturity rather than a commitment to crime. Perhaps it was a concern not to subject juvenile offenders in the latter category to the harsh penalties of the new Three Strikes law that led the Legislature, which had never before permitted juvenile adjudications to be used in adult court for purposes of enhancement, to include within the class of “strikes" only those crimes that, in the prosecutor’s view, were so serious as to require trying the minor as an adult.
According to the majority, a juvenile adjudication is a “strike” regardless of whether the prosecutor had sought a fitness hearing under Welfare and Institutions Code section 707. In the majority’s view, an “implied” finding that the minor is “a fit and proper subject to be dealt with under the juvenile court law” is inherent in every juvenile adjudication, and therefore all juvenile adjudications that meet the criteria listed in subparts (A), (B), and (D) of Penal Code section 667, subdivision (d)(3) are “strikes.” Not only does the majority’s holding fly in the face of the language of section 667, subdivision (d)(3)(C), which says nothing about “implied” findings, but it also renders that subdivision utterly meaningless. As I noted earlier, subdivision (d)(3) sets forth—in subparts (A), (B), (C), and (D)—four criteria that describe which juvenile adjudications can qualify as “strikes.” If subdivision (d)(3)(C)’s criterion is satisfied in every juvenile adjudication, then the provision serves no purpose.
In construing subdivision (d)(3)(C) of section 667 as having no effect, the majority has disregarded a cardinal rule of statutory construction, that courts should avoid a construction that makes some words surplusage. (People v. Gilbert (1969) 1 Cal.3d 475, 480 [82 Cal.Rptr. 724, 462 P.2d 580].) Here, the majority has not merely made surplusage out of a few words, but has construed an entire subdivision out of existence.
The majority insists that under its construction, section 667, subdivision (d)(3)(C)’s requirement that there be “a determination that the minor is a fit and proper subject to be dealt with under the juvenile court law” is not surplusage because it “helps distinguish those offenses committed by minors 16 or over that are adjudicated in juvenile court rather than as adult offenses.” (Maj. opn., ante, at p. 1102.) The majority does not explain, however, how the requirement in question “helps” in making this distinction. In any event, as I shall show, the majority is simply wrong.
*1112Section 667, subdivision (d)(3) begins by stating that a “prior juvenile adjudication shall constitute a prior felony conviction for purposes of enhancement” if it meets the four criteria I mentioned earlier. (Italics added.) Thus, subdivision (d)(3), in the words of the majority, “lists the requirements for a prior juvenile adjudication to qualify as a ‘strike.’ ” (Maj. opn., ante, at p. 1100, italics added.) By definition, a juvenile adjudication can occur only in juvenile court. Therefore, contrary to the majority’s bare assertion, subdivision (d)(3)(C) cannot possibly “help” in distinguishing between those offenses that are covered by subdivision (d)(3) and are adjudicated in juvenile court from those that are adjudicated as “adult offenses,” for none of the offenses covered in subdivision (d)(3) are adjudicated as adult offenses.
The majority offers three justifications for its construction of section 667, subdivision (d)(3)(C). None is persuasive.
First, according to the majority, to require an express finding of fitness “would so severely limit those juvenile adjudications that would qualify as ‘strikes,’ that such a result would seem to be at odds with the intent of section 667, subdivisions (b)-(i).” (Maj. opn., ante, at p. 1102, italics added.) What intent? The majority offers no explanation.
Once again, the majority’s assertion ignores a principle of statutory construction. Ordinarily, a reviewing court looks to the language of the statute to ascertain the Legislature’s intent in enacting it. (Freedom Newspapers, Inc. v. Orange County Employees Retirement System (1993) 6 Cal.4th 821, 826 [25 Cal.Rptr.2d 148, 863 P.2d 218].) When the statutory language is ambiguous, we may examine the goals to be achieved and the legislative history to assist us in resolving the ambiguity. (People v. Coronado (1995) 12 Cal.4th 145, 151 [48 Cal.Rptr.2d 77, 906 P.2d 1232].) Here, the language of section 667, subdivision (d)(3)(C) is unambiguous: Juvenile adjudications qualify as “strikes” only if there has been a determination that the minor is “a fit and proper subject to be dealt with under the juvenile court law.” But even if this language were considered ambiguous, the majority does not mention anything in the legislative history of section 667 that would suggest that the conclusion I draw from the statutory language—that the trial court must find the minor a fit subject to be dealt with under juvenile court law at a hearing under Welfare and Institutions Code section 707—is not the correct one.
The only declaration of legislative intent pertaining to the entire Three Strikes statutory scheme appears in section 667, subdivision (b), which states: “It is the intent of the Legislature in enacting subdivisions (b) through *1113(i), inclusive, to ensure longer prison sentences and greater punishment for those who commit a felony and have been previously convicted of serious and/or violent felony offenses.” (Italics added.) But this is of no help in construing subdivision (d)(3)(C) of section 667, for it refers only to persons previously “convicted” of violent or serious felonies. Ordinarily, juvenile adjudications are not convictions. While section 667, subdivision (d)(3) treats some juvenile adjudications as adult felony convictions and therefore as “strikes” for purposes of the Three Strikes law, in this case the issue is which adjudications the Legislature intended to treat in this fashion. As to this issue, the declaration of legislative intent in subdivision (b) of section 667 offers no assistance.
Next, the majority says a rule that only juvenile adjudications accompanied by a finding of fitness could qualify as “strikes,” as I am proposing, “would evoke questions regarding the statute’s constitutional validity,” because an increase in punishment “would depend solely on an unsuccessful motion for a determination that the minor is unfit for treatment in the juvenile court system.” (Maj. opn., ante, at p. 1102, original italics.) This statement is misleading. For an offense committed by a juvenile to be a strike, the prosecution need not make an unsuccessful motion to try the juvenile as an adult, because the offense will be a “strike” whether or not the motion succeeds. If the trial court grants the motion, the offense will be adjudicated in adult court, and if the minor is found guilty, the offense will qualify as a strike. If, however, the court denies the motion, the offense will be adjudicated in juvenile court, and if the minor is found to have committed the crime it will still qualify as a strike. In short, whether a criminal act by a juvenile is a “strike” does not turn on whether the prosecution is successful in its attempt to have the minor tried as an adult; rather, it turns on whether the prosecutor considers the crime so serious as to make the attempt in the first place.
The majority’s perceived shortcoming of such a rule is that it “would arguably be open to a variety of constitutional challenges such as equal protection, due process, and separation of powers.” (Maj. opn., ante, at p. 1102.) The majority cites no authority for this bare assertion. Moreover, because defendant has not attacked the constitutionality of the Three Strikes law, this issue is not present here. In any event, the majority’s resort to the rule of construction that ambiguous statutes should be construed in a manner that will avoid doubts about their constitutionality is of no avail. For this rule to apply, “the statute must be realistically susceptible of two interpretations . . . .” (People v. Anderson (1987) 43 Cal.3d 1104, 1146 [240 Cal.Rptr. 585, 742 P.2d 1306], original italics.) Here, as I have shown, the statutory *1114language is unambiguous. Therefore, it may not realistically be construed to abrogate the requirement that the minor be found, at a fitness hearing under Welfare and Institutions Code section 707, to be “a fit and proper subject to be dealt with under the juvenile court law.” (Welf. & Inst. Code, § 707, subd. (c).)
Finally the majority, apparently conceding that its construction of section 667, subdivision (d)(3)(C) renders this provision superfluous, asserts that to construe this provision as requiring an express finding of fitness by the juvenile court could “arguably” render superfluous subdivision (d)(3)(A) of section 667. Thus, according to the majority, either way section 667, subdivision (d)(3) is construed, part of it is superfluous.
Under subdivision (d)(3)(A) of section 667, juvenile adjudications qualify as “strikes” if the juvenile “was 16 years of age or older at the time he or she committed the prior offense.” When the Legislature enacted the Three Strikes law, juveniles under the age of 16 could not be tried as adults. Therefore, the majority reasons, if the Legislature intended section 667, subdivision (d)(3)(C) to require an express finding of fitness, there was no need for it to enact subdivision (d)(3)(A), because minors over the age of 16 were the only ones who could be found unfit to be tried in juvenile court.
This argument has superficial appeal, but on careful examination it proves unpersuasive. True, when the Three Strikes law was enacted in March 1994, minors under the age of 16 could not be tried as adults. But that was changed six months later, when the Legislature amended Welfare and Institutions Code section 707 to permit minors as young as 14 to be tried as an adults. Assembly Bill No. 560,1993-1994 Regular Session, which proposed amending section 707, was introduced in February 1993, and had been pending for over a year when the Legislature enacted the Three Strikes law in March 1994. Thus the Legislature knew, when it enacted the Three Strikes law, that it was on the verge of enacting legislation that would make Penal Code section 667, subdivision (d)(3)(A) not superfluous. It is reasonable to assume that the Legislature anticipated the passage of that legislation when it chose to include subdivision (d)(3)(A) in the Three Strikes law.
The majority’s holding also violates the time-honored rule that “ambiguous penal statutes are construed to favor the defendant.” (People v. Superior Court (Romero) (1996) 13 Cal.4th 497, 530 [53 Cal.Rptr.2d 789, 917 P.2d 628].) As this court said 107 years ago, “the defendant [in a criminal case] is entitled to the benefit of every reasonable doubt. . . as to the true interpretation of words or the construction of language used in a statute . . . .” (Ex parte Rosenheim (1890) 83 Cal. 388, 391 [23 P. 372].)
*1115Conclusion
We are all concerned about the epidemic of violent crime in our society. The Three Strikes law that the Legislature enacted in March 1994 and that we construe today (§ 667, subds. (b)-(i)) reflects a toughening public attitude towards repeat offenders. That attitude is also reflected in the nearly identical Three Strikes initiative that was overwhelmingly passed by the voters just eight months later. (§ 1170.12.)
A court construing a statute, however, can never be guided by public sentiment alone. Here, in construing the Three Strikes law, it is not enough to say that because the Legislature and the electorate wished to impose tougher penalties on repeat violent offenders, we should therefore give that enactment the harshest possible construction. Judges are constrained by the law. For the sake of the predictability and stability of the law, our guideposts in interpreting the Three Strikes law must be the usual principles of statutory construction that apply in every case, not our projections of the hopes and fears that led to the statute’s enactment. In the words of United States Supreme Court Justice Felix Frankfurter: “For judicial construction to stick close to what the legislation says and not draw prodigally upon unformulated purposes or directions makes for careful draftsmanship and for legislative responsibility. . . . Judicial expansion of meaning beyond the limits indicated is reprehensible because it encourages slipshodness in draftsmanship and irresponsibility in legislation. It also enlists too heavily the private . . . views of judges.” (Frankfurter, Foreword, Symposium on Statutory Construction (1950) 3 Vand. L.Rev. 365, 367-368.)
As the Contra Costa District Attorney said in a superior court brief he filed in this case, “ ‘Three Strikes’ is a poorly drafted statute.” Many of its provisions are contradictory or lack clarity. But the provision we construe today, subdivision (d)(3)(C) of section 667, is among the clearer ones in the Three Strikes law. As I have explained, application of well-established rules of construction here compels the conclusion that under subdivision (d)(3)(C), a juvenile adjudication is a “strike” only if the juvenile court has made the finding that the minor is “a fit and proper subject to be treated under the juvenile court law.” In coming to a contrary conclusion, the majority ignores these principles. The majority achieves its result of increasing the number of juvenile adjudications that will count as “strikes” only at the cost of effectively throwing out subdivision (d)(3)(C) from the Three Strikes law.
*1116I would reverse the judgment of the Court of Appeal.
Werdegar, J., concurred.
Respondent’s petition for a rehearing was denied August 27, 1997. Mosk, J., Kennard, J., and Werdegar, J., were of the opinion that the petition should be granted.
Unless otherwise stated, further statutory references are to the Penal Code.
Although decisional law has held that in rare instances a fitness hearing may be proposed by the court (Green v. Municipal Court (1976) 67 Cal.App.3d 794, 798-804 [136 Cal.Rptr. 710]) or requested by the minor (Joey W. v. Superior Court (1992) 7 Cal.App.4th 1167, 1174 [9 Cal.Rptr.2d 486]), Welfare and Institutions Code section 707 authorizes only the “petitioner” to do so. The petitioner in a delinquency matter is the prosecuting attorney. (Welf. & Inst. Code, § 650, subd. (c).)