Cal. Educ. Code § 15101

Notwithstanding any other law, an election may not be held pursuant to this chapter within 45 days before a statewide election or within 45 days after a statewide election unless conducted at the same time as the statewide election, subject to Part 3 (commencing with Section 10400) of Division 10 of the Elections Code, or on an established election date pursuant to Section 1000 or 1500 of the Elections Code.