Cal. Educ. Code § 67347.8

Any bonds issued and sold pursuant to this chapter may be refunded by the issuance and sale or exchange of refunding bonds in accordance with Article 6 (commencing with Section 16780) of Chapter 4 of Part 3 of Division 4 of Title 2 of the Government Code. The approval by the electors of this state of the issuance and sale of bonds under this chapter includes approval of the issuance and sale or exchange of any bonds issued to refund either those bonds or any previously issued refunding bonds.