California Education Code 52852 states:
A Schoolsite council shall be established at each school which participates in school-based program coordination. The council shall be composed of the principal and representatives of: teachers selected by teachers at the school; other school personnel selected by other school personnel at the school; parents of pupils attending the school selected by such parents; and, in secondary schools, pupils selected by pupils attending the school.

    At the elementary level, the minimum council size is 10 members.
    At the secondary level, the minimum council size is 12.
    Student Participation is optional at the middle school level.

California Education Code 64001 states:
… School districts shall assure…that the Single Plan for [Student] Achievement has been prepared in accordance with the law, that schoolsite councils have developed and approved a plan…and that [the] plans were developed with the review , certification, and advise of any applicable school advisory committees.