California Code, Education Code - EDC § 45040

(a) The governing board of a school district or charter school not paying the annual salaries of persons employed by the district or charter school in 12 equal monthly payments may withhold from each payment made to each employee an amount equal to 16 2/3 percent thereof.

(b) The total of the amounts deducted from the salary of an employee during a school year shall be paid to him or her in two equal installments, one installment to be paid not later than the fifth day of August next succeeding, and one installment to be paid not later than the fifth day of September next succeeding.

(c) If an employee leaves the service of the district or charter school by death or otherwise before receiving the moneys that may be due him or her, the amount due him or her shall be paid within 30 days to him or her or to any other person entitled to those moneys by law.