Cal. Lab. Code § 3092

A successful graduate of a training program in a particular apprenticeable occupation of a vocational education program meeting the standards of the California State Plan for Vocational Education may receive credit toward a term of apprenticeship if the program is jointly established and approved by a school district, a county superintendent of schools, a public entity conducting a regional occupational center or program, or a private postsecondary vocational school accredited by a regional or national accrediting agency recognized by the United States Office of Education and the program sponsor of the particular apprenticeable occupation.