California Code, Education Code - EDC § 88120

(a) A person who has served an initial probationary period in a class not to exceed six months or 130 days of paid service, whichever is longer, as prescribed by the rules of the commission shall be deemed to be in the permanent classified service, except that the commission may establish a probationary period in a class not to exceed one year for classes designated by the commission as executive, administrative, or police classes.  To receive permanent classified service status, each full-time peace officer and public safety dispatcher employed by a community college district operating a dispatch center certified by the Commission on Peace Officer Standards and Training shall serve in a probationary status for a period not less than one year from their date of appointment to that full-time position.

(b) An employee shall not attain permanent status in the classified service until that employee has completed a probationary period in a class.  A permanent employee who accepts a promotion and fails to complete the probationary period for that promotional classification shall be employed in the position from which the employee was promoted.  In any case, the rules of the commission may provide for the exclusion of time while employees are on a leave of absence.  The rights of appeal from disciplinary action before attainment of permanent status in the classified service shall be in accordance with Section 88124.

(c) To the extent that this section, as amended by Assembly Bill 275 of the 2021-22 Regular Session, conflicts with a provision of a collective bargaining agreement entered into by a public school employer and an exclusive bargaining representative before January 1, 2022, pursuant to Chapter 10.7 (commencing with Section 3540) of Division 4 of Title 1 of the Government Code, the changes made to this section by Assembly Bill 275 of the 2021-22 Regular Session shall not apply to the community college district until expiration or renewal of that collective bargaining agreement.

(d) To the extent that this section, as amended by Senate Bill 874 of the 2021-22 Regular Session, conflicts with a provision of a collective bargaining agreement entered into by a public school employer and an exclusive bargaining representative before January 1, 2023, pursuant to Chapter 10.7 (commencing with Section 3540) of Division 4 of Title 1 of the Government Code, the changes made to this section by Senate Bill 874 of the 2021-22 Regular Session shall not apply to the community college district until expiration or renewal of that collective bargaining agreement.