California Code, Education Code - EDC § 38133

(a) Aid, assistance, and encouragement to any of the activities authorized in Sections 38131 and 38132.

(b) Preservation of order in school facilities and on school grounds, and protection of school facilities and school grounds, including, if the governing board deems necessary, appointment of a person who shall have charge of the school facilities and grounds for purposes of their preservation and protection.

(c) That the use of school facilities or grounds is not inconsistent with the use of the school facilities or grounds for school purposes or interferes with the regular conduct of schoolwork.