Cal. Ed. Code § 15600
The State School Building Finance Committee or other governmental body empowered to make a determination of whether any or all of the bonds authorized to be issued by the state, under legislation enacted following the effective date of this section, for the purpose of assisting local school districts in the acquisition of sites, the construction of school buildings and related facilities, and the purchase of furniture and equipment, may instruct the Treasurer to include in the bonds, or any of them, provisions permitting their call and redemption at the option of the state prior to their maturity and indicating the price at which such bonds shall be subject to redemption; and it shall be the duty of the Treasurer to comply therewith. No bonds shall be subject to call or redemption prior to maturity unless they contain a recital to that effect.
Ca. Educ. Code § 15600