2009 California Education Code - Section 60530 :: Article 4. Destruction

60530.  The state board, any district board which employs a
superintendent of schools, and other school districts with the
approval of the county superintendent of schools may dispose of
unusable surplus or undistributed obsolete instructional materials,
or such materials which are usable but cannot be distributed pursuant
to Section 60510 in any of the following ways:
   (a) Mutilated as not to be salable as instructional materials and
sold for scrap or for use in the manufacture of paper pulp or other
substances at the highest price that can be obtained.
   (b) Destroyed by any economical means, provided that no
instructional material shall be destroyed until 30 days after the
governing board has given notice to all persons who have filed a
request for such notice.