From Consumer Wiki
The Bureau of Security and Investigative Services certifies and regulates firearms and baton instructors and firearms and baton training facilities under provisions of the Private Security Services Act, Chapter 11.5, Division 3, Business and Professions Code. No one may engage in any business regulated by this act in California without obtaining appropriate certification from this Bureau. Certification laws are subject to change. Applicants will be notified of amendments which may affect their applications or certifications.
Department Publications: Information and Applications