California Code, Education Code - EDC § 48950

(a) A school district operating one or more high schools, a charter school, or a private secondary school shall not make or enforce a rule subjecting a high school pupil to disciplinary sanctions solely on the basis of conduct that is speech or other communication that, when engaged in outside of the campus, is protected from governmental restriction by the First Amendment to the United States Constitution or Section 2 of Article I of the California Constitution.

(b) A pupil who is enrolled in a school at the time that the school has made or enforced a rule in violation of subdivision (a) may commence a civil action to obtain appropriate injunctive and declaratory relief as determined by the court. Upon motion, a court may award attorney's fees to a prevailing plaintiff in a civil action pursuant to this section.

(c) This section does not apply to a private secondary school that is controlled by a religious organization, to the extent that the application of this section would not be consistent with the religious tenets of the organization.

(d) This section does not prohibit the imposition of discipline for harassment, threats, or intimidation, unless constitutionally protected.

(e) This section does not supersede, or otherwise limit or modify, the provisions of Section 48907.

(f) The Legislature finds and declares that free speech rights are subject to reasonable time, place, and manner regulations.

(g) An employee shall not be dismissed, suspended, disciplined, reassigned, transferred, or otherwise retaliated against solely for acting to protect a pupil engaged in conduct authorized under this section, or refusing to infringe upon conduct that is protected by this section, the First Amendment to the United States Constitution, or Section 2 of Article I of the California Constitution.