Cal. Ed. Code § 51512
The Legislature finds that the use by any person, including a pupil, of any electronic listening or recording device in any classroom of the elementary and secondary schools without the prior consent of the teacher and the principal of the school given to promote an educational purpose disrupts and impairs the teaching process and discipline in the elementary and secondary schools, and such use is prohibited. Any person, other than a pupil, who willfully violates this section shall be guilty of a misdemeanor.
Any pupil violating this section shall be subject to appropriate disciplinary action.
This section shall not be construed as affecting the powers, rights, and liabilities arising from the use of electronic listening or recording devices as provided for by any other provision of law.
Ca. Educ. Code § 51512