2005 California Education Code Sections 60500-60501 Article 1. Determination of Obsolescence

60500.  For the purposes of this chapter, governing boards shall
adopt rules, regulations and procedures for prescribing standards for
determining when instructional materials adopted by them and either
loaned by them or in their possession are obsolete, and if such
materials are usable or unusable for educational purposes.
60501.  A school district may review instructional materials to
determine when those materials are obsolete pursuant to the rules,
regulations, and procedures adopted pursuant to Section 60500 and may
report the results of its review and staff recommendations at a
public meeting of the school district governing board.