Cal. Education Code § 1002

(a) Upon being so requested by the county board of education, the county committee on school district organization, by a two-thirds vote of the members, may either change the boundaries of any or all of the trustee areas of the county pursuant to Chapter 2 (commencing with Section 21100) of Division 21 of the Elections Code, or propose to increase or decrease the number of members of the county board of education, or both. (b) Following each decennial federal census, the county committee shall adopt trustee area boundaries pursuant to Chapter 2 (commencing with Section 21100) of Division 21 of the Elections Code. (c) Except as to the redistricting deadline provided in Section 21140 of the Elections Code, changes in trustee area boundaries or a proposed reduction in the number of county board of education members shall be made in writing and filed with the county board of supervisors not later than the first day of March of any school year. (d) Whenever the boundaries of trustee areas are changed so as to be coterminous with those of supervisorial districts of the county, excluding any part of a trustee area that is outside of the county pursuant to Section 1001, the election for members of the county board of education shall be consolidated with the countywide election.