California Code, Education Code - EDC § 38003

Persons employed and compensated as members of a security or police department of a school district shall be supplied with and authorized to wear a badge bearing the name of the school district.  The employee shall carry a suitable identification card bearing his or her photograph and signature and the signature of the superintendent of the school district.  The employee shall also carry such other identification data as may be required by local law enforcement agencies.  The governing board may direct the wearing of a distinctive uniform and shall prescribe same.  The costs of required uniforms, equipment, identification badges, and cards shall be borne by the district.