Education Code § 71003

(a) Except for the student members, the faculty members, and the classified employee member appointed by the Governor, any vacancy in an appointed position on the board shall be filled by appointment by the Governor, subject to confirmation by two-thirds of the membership of the Senate. A vacancy in the office of a student member, a faculty member, or the classified employee member shall be filled by appointment by the Governor.

(b) The appointee to fill a vacancy shall hold office only for the balance of the unexpired term.