Cal. Ed. Code § 17354
The Department of General Services, in accordance with standards and procedures adopted pursuant to Section 17351, and as such standards and procedures may thereafter be modified, shall either approve or reject such plans, specifications, and methods of construction. Approval shall not be given unless such plans, specifications, and methods of construction are in accordance with standards adopted by the department pursuant to Section 17351. The department may establish procedures for the inspection of the facilities and manufacturing processes of a manufacturer to determine the manufacturer's ability to produce factory-built school buildings in accordance with the plans, specifications, and methods of construction which the manufacturer has submitted to the department. The Department of General Services shall notify the State Department of Education of its approval of a manufacturer's plans, specifications, and methods of construction of a factory-built school building.
Ca. Educ. Code § 17354