Cal. Educ. Code § 85281

The county superintendent of schools shall number and date the registered order, and shall transmit the registered order to the governing board of the community college district that drew the order. The governing board shall deliver the registered order to the payee or to the order of the payee. From the date of registration, the registered order shall bear interest at the rate of 5 percent per annum until the date upon which notice is given, pursuant to this article, that the county superintendent of schools is ready to approve the registered order.