Opinion
TOBRINER, J.
For a number of years prior to 1965 petitioner held a General Secondary Life Diploma and a Life Diploma to Teach Exceptional Children, issued by the State Board of Education, which qualified petitioner for employment as a teacher in the public secondary schools of California. (Ed. Code, §§ 12905, 13251.) On August 5, 1965, an accusation was filed with the State Board of Education charging that petitioner’s life diplomas should be revoked for cause. On March 11, 1966, following a hearing, and pursuant to the recommendations of a hearing examiner, the board revoked petitioner’s life diplomas because of immoral and unprofessional conduct and acts involving moral turpitude as authorized by section 13202 of the Education Code.1 This revocation rendered petitioner ineligible for [218]*218employment as a teacher in any public school in the state.2 On February 14, 1967,3 petitioner sought a writ of mandate from the Superior Court of Los Angeles County to compel the board to set aside its decision and restore his life diplomas. After a hearing the superior court denied the writ, and this appeal followed.
For the reasons hereinafter set forth we conclude (a) that section 13202 authorizes disciplinary measures only for conduct indicating unfitness to teach, (b) that properly interpreted to this effect section 13202 is constitutional on its face and as here applied, and (c) that the record contains no evidence to support the conclusion that petitioner’s conduct indicated his unfitness to teach. The judgment of the superior court must therefore be reversed.
I. The Facts
For a number of years prior to 1964 petitioner worked as a teacher for the Lowell Joint School District. During this period, so far as appears from the record, no one complained about, or so much as criticized, his performance as a teacher. Moreover, with the exception of a single incident, no one suggested that his conduct outside the classroom was other than beyond reproach.
Sometime before the spring of 1963 petitioner became friends with Mr. and Mrs. Fred Schneringer. Mr. Schneringer also worked as a teacher in the public school system. To the Schneringers, who were involved in grave marital and financial difficulties at the time, petitioner gave counsel and advice. In the course of such counseling Mr. Schneringer frequently visited petitioner’s apartment to discuss his problems. For a one-week period in April, during which petitioner and Mr. Schneringer experienced severe emotional stress, the two men engaged in a limited, non-criminal4 physical [219]*219relationship which petitioner described5 as being of a homosexual nature. Petitioner has never been accused6 or convicted of any criminal activity whatever, and the record contains no evidence of any abnormal activities or desires by petitioner since the Schneringer incident some six years in the past. Petitioner and Schneringer met on numerous occasions in the spring and summer after the incident and nothing untoward occurred. When Schneringer later obtained a separation from his wife, petitioner suggested a number of women whom Schneringer might consider dating.
Approximately one year after the April 1963 incident, Schneringer reported it to the Superintendent of the Lowell Joint School District. As a result of that report petitioner resigned his teaching position on May 4, 1964.7
Some 19 months after the incident became known to the superintendent, the State Board of Education conducted a hearing concerning possible [220]*220revocation of petitioner’s life diplomas. Petitioner there testified that he had had some undefined homosexual problem at the age of 13, but that, with the sole exception of the Schneringer incident, he had not experienced the slightest homosexual urge or inclination for more than a dozen years. Mr. Cavalier, an investigator testifying for the board, stated that the Schneringer incident “was the only time that [petitioner] ever engaged in a homosexual act' with anyone.” No evidence was presented that petitioner had ever committed any act of misconduct whatsoever while teaching.
The Board of Education finally revoked petitioner’s life diplomas some three years after the Schneringer incident. The board concluded that that incident constituted immoral and unprofessional conduct, and an act involving moral turpitude, all of which warrant revocation of life diplomas under section 13202 of the Education Code.
II. Petitioner’s actions cannot constitute immoral or unprofessional cpnduct or conduct involving moral turpitude within the meaning of section 13202 unless those actions indicate his unfitness to teach.
Section 13202 of the Education Code authorizes revocation of life diplomas for “immoral conduct,” “unprofessional conduct,” and “acts involving moral turpitude.” Legislation authorizing disciplinary action against the holders of a variety of certificates, licenses and government jobs other than teaching8 also contain these rather general terms. This court has not attempted to formulate explicit definitions of those terms which would apply to all the statutes in which they are used. (See Yakov v. Board of Medical Examiners, supra, 68 Cal.2d 67, 73.) Rather, we have given those terms more precise meaning by referring in each case to the particular profession or the specific governmental position to which they were applicable.9
[221]*221In Hallinan v. Committee of Bar Examiners (1966) 65 Cal.2d 447 [55 Cal.Rptr. 228, 421 P.2d 76], for example, we considered the meaning of “acts of moral turpitude” as applied to an applicant for admission, to practice law. (See 65 Cal.2d at pp. 452, 461.) In that case the applicant had been arrested and convicted of a number of minor offenses in connection with peace demonstrations and civil rights “sit ins”; he had likewise been involved in a number of fistfights. We held that the applicant could not be denied admission to the bar. The nature of these acts, we ruled, “does not bear a direct relationship to petitioner’s fitness to practice law. Virtually all of the admission and disciplinary cases in which we have upheld decisions of the State Bar to refuse to admit applicants or to disbar, suspend, or otherwise censure members of the bar have involved acts which bear upon the individual’s manifest dishonesty and thereby provide a reasonable basis for the conclusion that the applicant or attorney cannot be relied upon to fulfill the moral obligations incumbent upon members of the legal profession [citations] .... Although petitioner’s past behavior may not be praiseworthy it does not reflect upon his honesty and veracity nor does it show him unfit for the proper discharge of the duties of an attorney.” (Italics added.) (Hallinan v. Committee of Bar Examiners, supra, 65 Cal.2d 447, 471-472; compare Schware v. Board of Bar Examiners, supra, 353 U.S. 232.)10
[222]*222In Yakov v. Board of Medical Examiners, supra, 68 Cal.2d 67, we were also concerned with moral turpitude. In that case a doctor had been convicted of nine counts of violation of section 4227 of the Business and Professions Code (furnishing dangerous drugs without prescription), and the Board of Medical Examiners had revoked his medical certificate. The superior court reversed the board’s action; we upheld that'court’s disposition of the matter, stating, inter alia, “The purpose of an action seeking revocation of a doctor’s certificate is not to punish the doctor but rather to protect the public. . . . [Citations.] While revocation of a certificate certainly works an unavoidable punitive effect, the board can seek to achieve a legitimate punitive purpose only through criminal prosecution. Thus, in this proceeding the inquiry must be limited to the effect of Dr. Yakov’s actions upon the quality of his service to his patients.” (Italics added.) (Yakov, v. Board of Medical Examiners, supra, 68 Cal.2d 67, 73, fn. 6.)11
Board of Education v. Swan (1953) 41 Cal.2d 546 [261 P.2d 261], and Board of Trustees v. Owens (1962) 206 Cal.App.2d 147 [23 Cal.Rptr. 710], dealt with the term “unprofessional conduct” as applied to teachers. In Swan we stressed: “One employed in public service does not have a constitutional right to such employment and is subject to reasonable supervision and restriction by the authorized governmental body or officer to the end that proper discipline may be maintained, and that activities among the employees may not be allowed to disrupt or impair the public service.” (Italics added.) (41 Cal.2d 546, 556.)12 In Owens the Court of [223]*223Appeal held that in deciding whether certain conduct by a teacher constituted unprofessional conduct which warranted discipline, a trial court must inquire whether that conduct had produced “any disruption or impairment of discipline or the teaching process . . . .” (206 Cal.App.2d 147, 157.)
In Orloff v. Los Angeles Turf Club, Inc. (1951) 36 Cal.2d 734 [227 P.2d 449], we dealt with a statute authorizing the exclusion from theaters, museums, and race courses of persons of “immoral character.” We reasoned that the objective of the statute was “the protection of others on the premises.” (Id. at p. 740.) Accordingly we held that a person might be excluded if, for example, he committed a lewd act or an act inimical to the public safety or welfare after gaining admittance to the place of entertainment. But we stressed that no sweeping inquiry could be made into the background and reputation of each person seeking admission. “[T]he private business, the personal relations with others, the past conduct not on the premises, of a person applying for or admitted to the [race] course, whether or not relevant to indicate his character, are immaterial in the application of the statutory standards . . . . ” (Orloff v. Los Angeles Turf Club, Inc., supra, 36 Cal.2d 734, 741.)13
In Jarvella v. Willoughby-Eastlake City School Dist. (1967) 12 Ohio Misc. 288, 41 Ohio Ops.2d 423 [233 N.E.2d 143], the court faced the issue of whether a teacher could be dismissed for “immorality” merely because he [224]*224had written a private letter to a friend containing language which some adults might find vulgar and offensive. The court held that Ohio Revised Code section 3319.16, authorizing dismissal for “immorality,” did not cover the teacher’s actions, and that he could not therefore be dismissed. The court explained, “Whatever else the term ‘Immorality’ may mean to many, it is clear that when used in a statute it is inseparable from ‘conduct’..... But it is not ‘immoral conduct’ considered in the abstract. It must be considered in the context in which the Legislature considered it, as conduct which is hostile to the welfare of the general public; more specifically in this case, conduct which is hostile to the welfare of the school community. ... In providing standards to guide school boards in placing restraints on conduct of teachers, the Legislature is concerned with the welfare of the school community. Its objective is the protection of students from corruption. This is a proper exercise of the power of a state to abridge personal liberty and to protect larger interests. But reasonableness must be the governing criterion. . . . Orloff v. Los Angeles Turf Club, Inc. 36 Cal.2d 734 .... The private conduct of a man, who is also a teacher, is a proper concern to those who employ him only to the extent it mars him as a teacher .... Where his professional achievement is unaffected, where the school community is placed in no jeopardy, his private acts are his own business and may not be the basis of discipline.” (233 N.E.2d 143, 145-146.)14
By interpreting these broad terms to apply to the employee’s performance on the job, the decisions in Hallinan, Yakov, Swan, Owens, Orloff and Jarvella give content to language which otherwise would be too sweeping to be meaningful. Terms such as “immoral or unprofessional conduct” or “moral turpitude” stretch over so wide a range that they embrace an [225]*225unlimited area of conduct. In using them the Legislature surely did not mean to endow the employing agency with the power to dismiss any employee whose personal, private conduct incurred its disapproval. Hence the courts have consistently related the terms to the issue of whether, when applied to the performance of the employee on the job, the employee has disqualified himself.
In the instant case the terms denote immoral or unprofessional conduct or moral turpitude of the teacher which indicates unfitness to teach. Without such a reasonable interpretation the terms would be susceptible to so broad an application as possibly to subject to discipline virtually every teacher in the state.15 In the opinion of many people laziness, gluttony, vanity, selfishness, avarice, and cowardice constitute immoral conduct. (See Note (1967) 14 U.C.L.A. L.Rev. 581, 582.) A recent study by the State Assembly reported that educators differed among themselves as to whether “unprofessional conduct” might include “imbibing alcoholic beverages, use of tobacco, signing petitions, revealing contents of school documents to legislative committees, appealing directly to one’s legislative representative, and opposing majority opinions . . . . ” (Report of the Subcommittee on Personnel Problems of the Assembly Interim Committee on Education, Appendix to the Journal of the Assembly, supra (1965) vol. 2, p. 25.) We cannot believe that the Legislature intended to compel disciplinary measures against teachers who committed such peccadillos if such passing conduct did not affect students or fellow teachers. Surely incidents of [226]*226extramarital heterosexual conduct against a background of years of satisfactory teaching would not constitute “immoral conduct” sufficient to justify revocation of a life diploma without any showing of an adverse effect on fitness to teach.16
Nor is it likely that the Legislature intended by section 13202 to establish a standard for the conduct of teachers that might vary widely with time, location, and the popular mood. One could expect a reasonably stable consensus within the teaching profession as to what conduct adversely affects students and fellow teachers. No such consensus can be presumed about “morality.” “Todays morals may be tomorrow’s ancient and absurd customs.” (Note, supra, 14 U.C.L.A. L.Rev. 581, 587.)17 And conversely, conduct socially acceptable today may be anathema tomorrow. Local boards of education, moreover, are authorized to revoke their own certificates and dismiss permanent teachers for immoral and unprofessional conduct (Ed. Code, §§ 13209, 13403); an overly broad interpretation of that authorization could result in disciplinary action in one county for conduct treated as permissible in another. (See Report of the Subcommittee on Personnel Problems of the Assembly Interim Committee on Education, Appendix to the Journal of the Assembly (1965) vol. 2, p. 25.)18 A more' constricted intérpretatioñ of “immoral,” “unprofessional,” [227]*227and “moral turpitude” avoids these difficulties, enabling the State Board of Education to utilize its expertise in educational matters rather than having to act “as the prophet to which is revealed the state of morals of the people or the common conscience.” (Note (1935) 24 Cal.L.Rev. 9, 22.)19
That the meaning of “immoral,” “unprofessional,” and “moral turpitude” must depend upon, and thus relate to, the occupation involved finds further confirmation in the fact that those terms are used in a wide variety of contexts. Along with public school teachers, all state college employees (Ed. Code, § 24306, subd. (a)), all state civil service workers (Gov. Code, § 19572, subd. (1)), and all barbers (Bus. & Prof. Code, § 6582)20 can be disciplined for “immoral conduct.”21 The prohibition against “acts involv[228]*228ing moral turpitude” applies to attorneys (Bus. & Prof. Code, § 6106) and to technicians, bioanalysts and trainees employed in clinical laboratories (Bus. & Prof. Code, § 1320), as well as to teachers. The ban on “unprofessional conduct” is particularly common, covering not only teachers, but also dentists (Bus. & Prof. Code, § 1670), physicians (Bus. & Prof. Code, § 2361), vocational nurses (Bus. & Prof. Code, § 2878, subd. (a)), optometrists (Bus. & Prof. Code, § 3090), pharmacists (Bus. & Prof. Code, § 4350), psychiatric technicians (Bus. & Prof. Code, § 4521, subd. (a)), employment agency officials (Bus. & Prof. Code, § 9993), state college employees (Ed. Code, § 24306, subd. (b)), certified shorthand reporters (Bus. & Prof. Code, § 8025), and funeral directors and embalmers (Bus. & Prof. Code, § 7707).Surely the Legislature did not intend that identical standards of probity should apply to more than half a million22 professionals and government employees in widely varying fields without regard to their differing duties, responsibilities, and degree of contact with the public.23
[229]*229We therefore conclude that the Board of Education cannot abstractly characterize the conduct in this case as “immoral,” “unprofessional,” or “involving moral turpitude” within the meaning of section 13202 of the Education Code unless that conduct indicates that the petitioner is unfit to teach. In determining whether the teacher’s conduct thus indicates unfitness to teach the board may consider such matters as the likelihood that the conduct may have adversely affected students or fellow teachers, the degree of such adversity anticipated, the proximity or remoteness in time of the conduct,24 the type of teaching certificate held by the party involved,25 the extenuating or aggravating circumstances, if any, surrounding the conduct,26 the praiseworthiness or blameworthiness of the motives resulting in the conduct,27 the likelihood of the recurrence of the questioned conduct, and the extent to which disciplinary action may inflict an adverse impact or chilling effect upon the constitutional rights of the teacher involved or other teachers.28
These factors are relevant to the [230]*230extent that they assist the board in determining whether the teacher’s fitness to teach, i.e., in determining whether the teacher’s future classroom performance and overall impact on his students are likely to meet the board’s standards.
III. If interpreted in this manner section 13202 can be constitutionally applied to petitioner.
Petitioner urges three substantive reasons to support his contention that section 13202 upon its face or as construed by the board deprived him of his constitutional rights. As we shall show, however, that section, as we have interpreted it, could constitutionally apply to petitioner.
Petitioner first suggests that the terms “unprofessional,” “moral turpitude,” and- particularly “immoral” are so vague as to constitute a denial of due process.29
[231]*231Civil as well as criminal statutes must be sufficiently clear as to give a fair warning of the conduct prohibited, and they must provide a standard or guide against which conduct can be uniformly judged by courts and administrative agencies. (Connelly v. General Constr. Co. (1926) 269 U.S. 385, 391 [70 L.Ed. 322, 328, 46 S.Ct. 126]; Jordan v. De George, supra, 341 U.S. 223, 231 [95 L.Ed. 886, 892, 71 S.Ct. 703]; In re Newbern (1960) 53 Cal. 2d 786, 796 [3 Cal.Rptr. 364, 350 P.2d 116]; Comment (1953) 41 Cal.L.Rev. 523,)30 The knowledge that he has erred is of little value to the teacher when gained only upon the imposition of a disciplinary penalty that jeopardizes or eliminates his livelihood. (See Note (1964), 15 Hastings L.J. 339, 341.) Courts and commentators31 have exposed and condemned the uncertainty of words such as “unprofessional,”32 “immoral,”33 and “moral turpitude.”34 Indeed, in Orloff v. Los [232]*232Angeles Turf Club, Inc., supra, 36 Cal.2d 734, 740, this court recognized that the term “immoral” might well be unconstitutionally vague. (Compare Konigsberg v. State Bar (1957) 353 U.S. 252, 263 [1 L.Ed.2d 810, 819, 77 S.Ct. 722].
Orloff also indicated, however, that such vagueness could be resolved by a more precise judicial construction and application of the statute in conformity with the legislative objectives. (Id. at p. 740.) In this manner we upheld in Orloff a provision authorizing the exclusion from certain public accommodations of a person of immoral character. We sustained in a similar way the term “unprofessional conduct” against a challenge of vagueness in Board of Education v. Swan, supra, 41 Cal.2d 546, 553-554.35
As [233]*233we have explained above, the prohibitions against immoral and unprofessional conduct and conduct involving moral turpitude by a teacher constitutes a general ban on conduct which would indicate his unfitness to teach. This construction gives section 13202 the required specificity. Teachers, particularly in the light of their professional expertise, will normally be able to determine what kind of conduct indicates unfitness to teach.36 Teachers are further protected by the fact that they cannot be disciplined merely because they made a reasonable, good faith, professional judgment in the course of their employment with which higher authorities later disagreed. (See Yakov v. Board of Medical Examiners, supra, 68 Cal.2d 67, 74.)37
Petitioner secondly contends that the ban on immoral conduct in section 13202 violates his constitutionally protected right to privacy. It is true that an unqualified proscription against immoral conduct would raise serious constitutional problems.38 Conscientious school officials concerned with [234]*234enforcing such a broad provision might be inclined to probe into the private life of each and every teacher, no matter how exemplary his classroom conduct. Such prying might all too readily lead school officials to search for “telltale signs” of immorality in violation of the teacher’s constitutional rights. (Griswold v. Connecticut (1965) 381 U.S. 479, 485 [14 L.Ed.2d 510, 515, 85 S.Ct. 1678].)39 The proper construction of section 13202, however, minimizes the danger of such sweeping inquiries.40 By limiting the application of that section to conduct shown to indicate unfitness to teach, we substantially reduce the incentive to inquire into the private lives of otherwise sound and competent teachers.
Finally, petitioner urges that the board cannot revoke his life diplomas because his questioned conduct does not rationally relate to his duties as a teacher, No person can be denied government employment because of factors unconnected with the responsibilities of that employment. (Pickering v. Board of Education (1968) 391 U.S. 563, 572 [20 L.Ed.2d 811, 819, 88 S.Ct. 1731]; Shelton v. Tucker (1960) 364 U.S. 479, 487-490 [5 L.Ed.2d 231, 236-238, 81 S.Ct. 247]; Konigsberg v. State Bar, [235]*235supra, 353 U.S. 252, 262 [1 L.Ed.2d 810, 819, 77 S.Ct. 722]; Schware v. Board of Bar Examiners, supra, 353 U.S. 232, 238-239 [1 L.Ed.2d 796, 801-802, 77 S.Ct. 752, 64 A.L.R.2d 288]; Wieman v. Updegraff (1952) 344 U.S. 183, 192 [97 L.Ed. 216, 222, 73 S.Ct. 215]; United Public Workers v. Mitchell (1947) 330 U.S. 75, 101 [91 L.Ed. 754, 773, 67 S.Ct. 556]; Scott v. Macy (1965) 349 F.2d 182 [121 App.D.C. 205]; Norton v. Macy, supra, 417 F.2d 1161, 1164 & fn. 7; see 1 Emerson Haber & Dorsen, Political and Civil Rights in the United States, supra, pp. 363-364; Reich, The New Property (1964) 73 Yale L.J. 733, 782.)41 Again, however, the proper construction of section 13202 avoids this problem, for that interpretation would bar disciplinary action against petitioner unless the record demonstrated that petitioner’s conduct did indicate his unfitness to teach.
IV. The record contains no evidence that petitioner’s conduct indicated his unfitness to teach.
As we have stated above, the statutes, properly interpreted, provide that the State Board of Education can revoke a life diploma or other document of certification and thus prohibit local school officials from hiring a particular teacher only if that individual has in some manner indicated that he is unfit to teach. Thus an individual can be removed from the teaching profession only upon a showing that his retention in the profession poses a significant danger of harm to either students, school employees, or others who might be affected by his actions as a teacher. Such a showing may be based on testimony (Gov. Code, § 11513), on official notice (Gov. Code, § 11515), or on both. Petitioner’s conduct in this case is not disputed. Accordingly, we must inquire whether any adverse inferences can be drawn from that past conduct as to petitioner’s teaching ability,42 or as to the possibility that publicity surrounding past conduct may in and of itself substantially impair his function as a teacher.
[236]*236As to this crucial issue, the record before the board and before this court contains no evidence whatsoever. The board called no medical, psychological, or psychiatric experts to testify as to whether a man who had had a single, isolated, and limited homosexual contact would be likely to repeat such conduct in the future. The board offered no evidence that a man of petitioner’s background was any more likely than the average adult male to engage in any untoward conduct with a student. The board produced no testimony from school officials or others to indicate whether a man such as petitioner might publicly advocate improper conduct. The board did not . attempt to invoke the provisions of the Government Code authorizing official notice of matters within the special competence of the board.43
This lack of evidence is particularly significant because the board failed to show that petitioner’s conduct in any manner affected his performance as a teacher. There was not the slightest suggestion that petitioner had ever attempted, sought, or even considered any form of physical or otherwise improper relationship with any student.44 There was no evidence that petitioner had failed to impress upon the minds of his pupils the principles of morality as required by section 13556.5 of the Education Code.45 There is no reason to believe that the Schneringer incident affected petitioner’s apparently satisfactory relationship with his co-workers.46
[237]*237The board revoked petitioner’s license three years after the Schneringer incident; that incident has now receded years into the past. Petitioner’s motives at the time of the incident involved neither dishonesty nor viciousness, and the emotional pressures on both petitioner and Schneringer suggest the presence of extenuating circumstances. Finally, the record contains no evidence that the events of April 1963 have become so notorious as to impair petitioner’s ability to command the respect and confidence of students and fellow teachers in schools within or without the Lowell Joint School District.
Before the board can conclude that a teacher’s continued retention in the profession presents a significant danger of harm to students or fellow teachers, essentia] factual premises in its reasoning should be supported by evidence or official notice. In this case, despite the quantity and quality of information available about human sexual behaviour,47 the record contains no such evidence as to the significance and implications of the Schneringer incident. Neither this court nor the superior court is authorized to rectify this failure by uninformed speculation or conjecture as to petitioner’s future conduct. (See H. D. Wallace & Associates v. Department of Alcoholic etc. Control (1969) 271 Cal.App.2d 589, 593 [76 Cal.Rptr. 749]; Bley v. Board of Dental Examiners (1927) 87 Cal.App. 193, 196 [261 P. 1036].)
The facts in this case closely resemble those in Norton v. Macy, supra, 417 F.2d 1161. In Norton a federal employee was dismissed for homosexual behavior outside of working hours which the United States Civil Service Commission labeled “immoral.” The court held that he could be dismissed only if he had committed or was likely to commit some act with an “ascertainable deleterious effect'on the efficiency of the service.” (P. 1165.) The employee’s immediate superior testified that he was competent and performed very good work. Federal officials conceded that the “immoral” conduct caused no problems of national security and that the “immorality” had provoked no difficulties with fellow employees. The employee had neither openly flaunted nor carelessly displayed his unorthodox sexual conduct in public. The government justified the dismissal only by a vague [238]*238reference to the unsubstantiated possibility that the conduct might tend to embarrass the agency for which the employee had worked. The Court of Appeals for the District of Columbia declined to speculate on the record before it whether the employee might someday prove unfit for government service; the court ruled the dismissal arbitrary and thus invalid.
Respondent relies heavily on Sarac v. Board of Education (1967) 249 Cal.App.2d 58 [57 Cal.Rptr. 69]. The facts involved in Sarac are clearly distinguishable from the instant case; the teacher disciplined in that case had pleaded guilty to a criminal charge of disorderly conduct arising from his homosexual advances toward a police officer at a public beach; the teacher admitted a recent history of homosexual activities. The court’s discussion in that case includes unnecessarily broad language suggesting that all homosexual conduct, even though not shown to relate to fitness to teach, warrants disciplinary action. (Id. at pp. 63-64.) The proper construction of section 13202, however, as we have demonstrated, is more restricted than indicated by this dicta in Sarac, and to the extent that Sarac conflicts with this opinion it must be disapproved.
Although the superior court in the instant case rendered a conclusion of law that petitoner had demonstrated his unfitness to teach, we cannot ascertain with certainty whether or not the court in so ruling relied upon this erroneous dicta in Sarac: (Compare Screws v. United States (1945) 325 U.S. 91, 106-107 [89 L.Ed. 1495, 1505-1506, 65 S.Ct. 1031].) In any event, “the ultimate conclusion to be drawn from undisputed facts is a question of law for an appellate court [citations].” (Yakov v. Board of Medical Examiners, supra, 68 Cal.2d 67, 74, fn. 7. Even if the trial court’s statement were to be construed as a finding of fact it would not permit us to affirm the board’s action, since, as indicated, no “credible, competent evidence” supports any such inference of petitioner’s unfitness to teach. (Yakov v. Board of Medical Examiners, supra, 68 Cal.2d 67, 69; Konigsberg v. State Bar, supra, 353 U.S. 252, 262, 273 [1 L.Ed.2d 810, 819, 825, 77 S.Ct. 722]; Schware v. Board of Bar Examiners, supra, 353 U.S. 232, 246-247 [1 L.Ed.2d 796, 805-806, 77 S.Ct. 752, 64 A.L.R.2d 288].) .
V. Conclusion
In deciding this case we are not unmindful of the public interest in the elimination of unfit elementary and secondary school teachers. (See Beilan v. Board of Education (1958) 357 U.S. 399, 406-408 [2 L.Ed.2d 1414, 1420-1421, 78 S.Ct. 1317]; Adler v. Board of Education (1952) 342 U.S. 485, 493 [96 L.Ed. 517, 524, 72 S.Ct. 380, 27 A.L.R.2d 472]; Board of Education v. Swan, supra, 41 Cal.2d 546, 553-554; Vogulkin v. State Board of Education (1961) 194 Cal.App.2d 424, 429-430 [15 Cal. Rptr. 335].) But petitioner is entitled to a careful and reasoned inquiry into his [239]*239fitness to teach by the Board of Education before he is deprived of his right to pursue his profession. (See Report of the Senate Interim Committee on Licensing Business and Professions (1955) App.J. Senate, vol. 2, pp. 38-39, 63; Note, supra, 44 Cal.L.Rev. 403, 405; Note, supra, 15 Hastings L. J. 339, 346; Note (1962) 14 Stan.L.Rev. 533, 541.) “The right to practice one’s profession is sufficiently precious to surround it with a panoply of legal protection” (Yakov v. Board of Medical Examiners, supra, 68 Cal.2d 67, 75), and terms such as “immoral,” “unprofessional,” and “moral turpitude” constitute only lingual abstractions until applied to a specific occupation and given content by reference to fitness for the performance of that vocation.
The power of the state to regulate professions and conditions of government employment must not arbitrarily impair the right of the individual to live his private life, apart from his job, as he deems fit. Moreover, since modern hiring practices purport to rest on scientific judgments of fitness for the job involved, a government decision clothed in such terms can seriously inhibit the possibility of the dismissed employee thereafter successfully seeking non-government positions.48 (See Matthews v. Murphy (1901) 23 Ky.LawRep. 750 [63 S.W. 785, 786]; Note (1966) 66 Colum.L.Rev. 719, 720; Note (1952) 52 Colum.L.Rev. 787, 798.) That danger becomes especially acute under circumstances such as the present case in which loss of certification will impose upon petitioner “a ‘badge of infamy,’ . . . fixing upon him the stigma of an official defamation of character.” (Norton v. Macy, supra, 417 F.2d 1161, 1164, fns. 8 & 9.)
Our conclusion affords no guarantee that petitoner’s life diplomas cannot be revoked. If the Board of Education believes that petitioner is unfit to teach, it can reopen its inquiry into the circumstances surrounding and the implications of the 1963 incident with Mr. Schneringer.49 The board also has at its disposal ample means to discipline petitioner for future misconduct.50
[240]*240Finally, we do not, of course, hold that homosexuals must be permitted to teach in the public schools of California. As we have explained, the relevant statutes, as well as the applicable principles of constitutional law, require only that the board properly find, pursuant to the precepts set forth in this opinion, that an individual is not fit to teach. Whenever disciplinary action rests upon such grounds and has been confirmed by the judgment of a superior court following an independent review of the evidence,51 this court will uphold the result.
The judgment of the superior court denying the writ of mandate is reversed, and the cause is remanded to the superior court for proceedings consistent with this opinion.
Traynor, C. J., Peters, J., and Mosk, J., concurred.