Elec. Code, § 10603

(a) In any school district or community college district governing board election the name of any person shall be placed on the ballot, subject to Sections 35107 and 72103 of the Education Code, if there is filed with the county elections official having jurisdiction, not more than 113 days nor less than 88 days prior to the election, a declaration of candidacy containing the appropriate information in the blank spaces and signed by the person whose name is thereby to be placed on the ballot.

(b) No candidate whose declaration of candidacy has been filed for any school district or community college district governing board election or county board of education election may withdraw as a candidate after the 88th day prior to the election.

(c) Notwithstanding any other provision of law, except as provided in subdivision (d), no person shall file nomination papers for more than one district office, including a county board of education office, at the same election.

(d) Notwithstanding any other provision of law, if a proposal to form a unified school district is on the same ballot as the election of governing board members of that district, any candidate for a position on the existing governing board may file nomination papers for that position pursuant to subdivision (a) and may, at the same election, also file nomination papers for a position on the governing board of the proposed unified school district.