A county superintendent shall purchase a capital outlay item involving an expenditure of more than two thousand five hundred dollars ($2,500) through the county purchasing agent, or he shall make the purchase directly from a vendor only after having secured in writing from responsible vendors at least three estimates of the cost of the item. The county superintendent of schools shall purchase the capital outlay item at the estimated cost from the vendor who submits the lowest estimate meeting the prescribed specifications, or shall reject all estimates. The provisions of this section shall not apply to the purchasing of films, filmstrips, and books.
Cal. Code Regs. Tit. 5, § 17291