California Code, Education Code - EDC § 48903

(a) Except as provided in subdivision (g) of Section 48911 and in Section 48912, the total number of days for which a pupil may be suspended from school shall not exceed 20 schooldays in any school year, unless for purposes of adjustment, a pupil enrolls in or is transferred to another regular school, an opportunity school or class, or a continuation education school or class, in which case the total number of schooldays for which the pupil may be suspended shall not exceed 30 days in any school year.

(b) For the purposes of this section, a school district may count suspensions that occur while a pupil is enrolled in another school district toward the maximum number of days for which a pupil may be suspended in any school year.