As used in this article, "employing unit" and "school employer" means the governing board of any school district or community college district, any county board of education, any county superintendent of schools, or any personnel commission of a school district or community college district which has a merit system pursuant to any provision of the Education Code, or any instrumentality of the foregoing, or any instrumentality of more than one of the foregoing, which employs one or more employees.
Ca. Unemp. Ins. Code § 821.4