Cal. Education Code - EDC § 17540. Section 17540.
The governing board of any school district may sell any personal property or school supplies belonging to the district to the federal government or its agencies, to the state, to any county, city and county, city or special district, or to any other school district or any agency eligible under the federal surplus property law, (40 U.S.C. Sec. 484(j)(3)) and the governing board of another school district may purchase the property, for an amount equal to the cost thereof plus the estimated cost of purchasing, storing, and handling the property, without advertisement for or receipt of bids or compliance with any other provisions of this code. The governing board of any school district may purchase any personal property or school supplies for the purpose of selling them, pursuant to this section.
This section does not authorize the purchase, for the purpose of resale, of standard school supplies and equipment by any elementary school district governed by school trustees.