2005 California Education Code Sections 51730-51732 Classes

51730.  The governing body of any elementary school district may
establish and maintain, in connection with any school under its
jurisdiction, special day and evening classes and summer schools,
consisting of special day classes or special evening classes or both,
for the purpose of giving instruction in any of the branches of
study prescribed and authorized for the elementary schools.
51731.  These classes may be convened at the hours and for the
length of time during the school day or evening, and at the period
and for the length of time during the school year as may be
determined by the governing authority.
51732.  The evening elementary schools and the special day and
evening classes of the elementary schools of any school district
shall be open for the admission of such minors and adults as in the
judgment of the governing board of the school district maintaining
the schools or classes may profit from the instruction offered.