The plaintiff school district, finding its finances in a depleted condition, submitted to the voters of the district the question of increasing its taxing authority. This proposal was rejected by the voters. Because of such defeat at the polls, the school board, the governing body of the school district, found that funds available to the district were insufficient to meet the demands of its teachers for increased salaries. The plaintiff thereupon determined that the only way such demands could be met was by the elimination of certain courses from its curriculum. A resolution eliminating certain courses thereafter was adopted, thus eliminating certain teaching positions in the system.
*391The defendant, representing a vast majority of the teachers in the plaintiff’s system, thereupon demanded that the plaintiff restore such teaching positions, and suggested that plaintiff district obtain the funds needed for salary increases for teachers by the issuance of certificates of indebtedness or by some other form of deficit spending. During the course of negotiations between the parties, representatives of the defendant impressed upon the plaintiff school district that the “onus” of failing to accede to the teachers’ demands would be on the plaintiff, and that if matters were not settled to the satisfaction of the teachers, “sanctions” could be imposed against the school district which would include recommending to members of the defendant association and to members of the National Education Association that such members do not consider employment by the plaintiff district.
A meeting between the parties was set for April 10, 1968. Before that meeting convened, however, the plaintiff went into the district court and obtained a temporary restraining order against the use of sanctions by the defendant. Thereupon the Wahpeton Education Association, many of whose members also are members of the defendant State association, voted to impose sanctions and requested the defendant to support it in its action.
The temporary injunction issued by the court was served upon the defendant, requiring the defendant to show cause, if any it had, why the defendant, its officers, employees, or agents, should not be restrained and enjoined, pending hearing, from imposing sanctions against the plaintiff, or from recommending to defendant’s members or to members of the National Education Association that they do not accept employment with the plaintiff school district. The order to show cause was set for hearing on April 24, 1968, at three o’clock p.m.
The defendant, on being served with summons and complaint and with the restraining order, filed its answer and counterclaim, together with its petition for a temporary injunction restraining the plaintiff school district from interfering with the defendant or its members, restraining the plaintiff from issuing or offering any contract to any teachers with regard to any position with the plaintiff school district, during the time the defendant was restrained and enjoined by the order previously issued by the court, and from further contacting any organization for the purpose of recruiting teachers for the plaintiff school district. A temporary order so restraining the plaintiff was signed by the court, and an order to show cause why such temporary restraining order should not be made permanent was set for hearing at the same time and place at which the order to show cause in the proceedings for injunction brought by the plaintiff was to be heard.
Both parties appeared before the court on the 24th day of April 1968 at three o’clock pursuant to such orders to show cause. After hearing, the court issued its order which provided:
“I.
“That the temporary restraining order issued against the defendant on the 10th day of April, 1968 be continued for a period of two weeks from and after the 24th day of April, 1968, at which time said matter will be heard on its merits.
“II.
“That the temporary restraining orders issued by this Court against the plaintiff on the 15th day of April, 1968 and the 19th day of April, 1968 be, and they hereby are dissolved; provided however, that those teachers in the Wah-peton School District who signed contracts issued by the School Board on April 17, 1968 shall have until 5:00 P. M. on April 26, 1968 to withdraw said contracts if they so desire, and provided further that those teachers who submitted resignations as a result of the issuance of said contracts shall have until *3925:00 P. M. on April 26, 1968 to withdraw said resignations.”
From such order, dated April 25, 1968, the defendant has taken the appeal to this court.
The first question which we must determine is whether the order appealed from is an appealable order. This court has held that appeals from temporary or interlocutory orders will not lie, except in cases where appeal is expressly authorized by statute. Nordenstrom v. Swedberg, 123 N.W.2d 285 (N.D.1963).
Such orders, where not made expressly appealable, are reviewable on appeal from the judgment, if the order and the facts essential to the review are embodied in the settled statement of the case and made a part of the record on appeal. Burdick v. Mann, 59 N.D. 611, 231 N.W. 545 (1930).
Section 28-27-02, North Dakota Century Code, sets out what orders are appealable. Subsection 7 of that section provides that an order made by the district court or judge thereof, without notice, is not an ap-pealable order; but an order made by the district court after hearing is had upon notice
“* * * which vacates or refuses to set aside an order previously made without notice may be appealed to the supreme court when by the provisions of this chapter an appeal might have been taken from such order so made without notice, had the same been made upon notice.”
We therefore must determine whether the orders of the district court, made without notice, which restrained the parties from doing certain things, would have been appealable orders had they been made on notice. If they were appealable, then the order, after hearing, which vacated such previous orders in part and which refused to set -aside and vacate such ■ previous orders in part, would be an appealable order.
The previous orders restrained and enjoined the respective parties from doing certain acts. Subsection 3 of Section 28-27-02 provides, among other things, that an order which grants, modifies, or dissolves an injunction is an appealable order.
The original order signed by the district court, without notice, enjoined the defendant from doing any act which might interfere with the carrying out of the functions of the plaintiff as required by law; and from imposing sanctions or from recommending to members of the North Dakota Education Association or the National Education Association, or any student affiliates of either, that they do not consider employment by the plaintiff. Had this order been made upon notice, it would, in our opinion, have been an appealable order. Thus, when the district court, after hearing, refused to set aside the order, the order which refused to vacate the original order, which had been made without hearing, was an appealable order under Section 28-27-02(7), North Dakota Century Code. The mere fact that the district court refuses to vacate or dissolve the order for a period of an additional two weeks only would not, in our opinion, make this a nonappealable order merely because it is a temporary order. If the trial court could make this order nonappealable by refusing to set aside the injunction for a period of time, to wit, two weeks in this case, instead of vacating or refusing to vacate the order, it could issue a series of such orders, each of which would refuse to vacate or dissolve the injunction for a two-week period and thus prevent an appeal from such order. Or it could issue a temporary order for two months instead of for two weeks.
It will be noted that in the order appealed from, the district court did dissolve the temporary restraining order previously issued ex parte (on application of the defendant) against the plaintiff school district. This portion of the order thus was an order that dissolved an injunction against the plaintiff as well as an order which refused to modify or dissolve an injunction against the defendant, issued after hearing. As such, it is held to be an appealable order under the provisions of Sections 28-*39327-02(3) and 28-27-02(7), North Dakota Century Code. We so held in Gillies v. Radke, 78 N.D. 974, 54 N.W.2d 155 (1952), and in State ex rel. Olson v. Lynch, 138 N.W.2d 785 (N.D.1965).
We next come to the issue of whether the question raised by the appeal is moot. Both parties concede that, immediately after the entry of the order appealed from, negotiations between the plaintiff and the teachers were resumed and that the controversy was settled within two days thereafter. Thus, at the time the appeal was taken, a full settlement of the issues between the parties had been reached.
Ordinarily, an appeal will be dismissed if the question raised by the appeal has become moot or if, without fault of the respondent, an event has occurred which makes a determination of such question unnecessary and leaves no actual controversy to be determined. Hart v. Bye, 86 N.W.2d 635 (N.D.1957); State ex rel. Schafer v. Gussner, 92 N.W.2d 65 (N.D.1958); Lockwood v. Baird, 59 N.D. 713, 231 N.W. 851 (1930).
The parties both concede that the issue which was raised by the pleadings no longer exists, and that there is no reason for continuing in force the temporary restraining order which had been granted by the district court. The controversy has been settled, and the record does not disclose any reason for believing that the acts which the plaintiff or the defendant sought to have enjoined will be renewed. As this court said in State ex rel. Schafer v. Gussner, supra:
“Judicial power vested in the courts of North Dakota, extends only to the determination of actual controversies, properly before the court, and does not authorize the court to give advisory opinions on moot questions or abstract principles.”
The appellant, however, asserts that certain exceptions to this rule exist in this case, and that this court should determine the issues on this appeal for the following reasons:
“1. The Order did not, in fact, terminate but is still in effect ;
“2. The issue is not moot because of the secondary question of practical importance (i. e., liability under plaintiff’s bond) which turns upon the result of the appeal; and
“3. The matter before the Court contains issues of such overriding importance that the value of their determination as a precedent is sufficient to overcome the rule against considering moot questions.”
We cannot agree with the appellant’s contentions. The first contention clearly is untenable because a preliminary injunction will be dissolved when the reasons for granting such injunction have ceased to exist and it no longer can serve any useful purpose. As we stated in Brace v. Steele County, 77 N.D. 276, 42 N.W.2d 672 (1950):
“A temporary injunction is issued only to preserve the rights of the plaintiff during the pendency of the action and where the reasons for granting such injunction have ceased to exist and it is not likely that the acts which the temporary injunction sought to prohibit will be renewed the injunction should be dissolved.”
The purpose of the restraining orders ceased to exist when the controversy between the parties was settled; and therefore, the purpose of the injunction having ceased to exist, the injunction should be dissolved.
The appellant contends next that the issue is not moot because there is the question of liability under the appellant’s bond which will depend upon the results of this appeal. This contention also is without merit. As we stated in Hart v. Bye, supra:
“A moot question will not be passed upon simply to relieve an appellant from *394paying a judgment for costs, as costs are distinct from and do not relate to the merits of the action, arising only after the question of merits has been passed upon.”
The final ground urged by the appellant in support of its contention that this matter is not moot is based upon the fact that the appeal involves issues of such overriding importance that the value of their determination as a precedent is sufficient to overcome the rule against considering moot questions. This court did say, in Hart v. Bye, supra, that an exception to the moot-question rule is that the appeal will not be dismissed if it involves a question of great public interest. However, that rule cannot be applied in this case. In the proceedings before the trial court, no evidence was produced other than returns made in resistance to the continuance of the respective restraining orders. The defendant has denied that if it were to impose sanctions, such sanctions would be as alleged by the plaintiff Wahpeton School District. On the other hand, the plaintiff Wahpeton School District has denied that it would attempt to restrain the defendant from doing any acts which it might lawfully do. We have no evidence in this case from which we can determine just what “sanctions” would imply. Neither can we determine, from the record before us, in what way, if any, the plaintiff would interfere with the legal rights of the defendant. These questions cannot be determined upon the partial record which we have before us.
A concurring opinion, which dissents from the holding herein on the ap-pealability ■ of a temporary restraining order, has been filed. This opinion asserts that if a trial court were to continue a restraining order for an unreasonable time, the party restrained would not be without an appropriate remedy because such party could apply to this court for a supervisory writ. In making this assertion, the writer fails to mention the fact that a supervisory writ was sought in this case by NDEA and that such application was denied by this court because it was deemed best for all concerned that the matter be brought before us for review on appeal.
For reasons stated in this opinion, the appeal of the North Dakota Education Association is dismissed.
ERICKSTAD and PAULSON, JJ, concur.