Cal. Health & Saf. Code § 1686
The State Department of Health Services shall, subject to the provisions of Section 1685, issue certificates of registration to school audiometrists and to qualified supervisors of health, pursuant to Sections 11751 and 11823 of the Education Code. The department shall prescribe such qualifications as may be necessary for the testing of the hearing of schoolchildren.
Candidates for registration who present evidence of having satisfactorily completed the required training in audiology and audiometry at an accredited university or college, as prescribed by the State Department of Health Services, may be issued certificates of registration without further examination.
The state department shall require a registration fee not in excess of ten dollars ($10) for each certificate issued. Such fee shall be based upon a determination by the department as to the amount that is reasonably necessary to pay for the costs of the issuance of certificates of registration.
Ca. Health and Saf. Code § 1686