Cal. Ed. Code § 16004
Notwithstanding any provision of this chapter to the contrary, the board shall review each application and shall take action to insure that apportionments are not made that will provide for construction of permanent facilities to meet temporary peak enrollments at any site or at any grade level. In cases deemed by the board to be hardship cases involving high school or unified school districts where the district will not be able to house high school pupils under basic area limitation formulas prescribed in this chapter, the board may make apportionments for high school facilities in excess of the limitations. In that event, the board may provide for the construction of portable facilities at any particular site for which the apportionments are made, particularly where the board determines that there will be, within a six- to nine-year period immediately following the apportionment for facilities at the site, a diminution in enrollment at the site justifying relocation of facilities. In no event shall the board have any authority to make an apportionment for construction area at a high school attendance center which, when added to the area of adequate school construction at that center, would exceed the area permitted therefor by Sections 16053 and 16054.
Ca. Educ. Code § 16004