If the holder of a valid Preliminary Single Subject Teaching Credential seeks to add an authorization they need to verify specialty area subject-matter competency. Specific requirements for the supplementary authorizations are outlined on form CL-629 which is available from the California Commission on Teacher Credentialing. The teacher must have obtained permanent status as defined in Education Code Section 44929.21 or 44929.22 or 44929.23 in a school district in California within the previous ten years. For renewal the teacher must complete at least 6 semester units of appropriate course work. The document will be issued no more than three times.
Elective subjects are subjects other than English, mathematics, science and social science.