Cal. Educ. Code § 56856

In order to provide appropriate special education and related services to an individual residing in a state hospital, the State Departments of Developmental Services and State Hospitals shall contract with a county superintendent of schools, nonpublic, nonsectarian school, or other agency to provide all or part of the services that the individual’s individualized education program indicates should be provided in a program other than on state hospital grounds. A contract between a state hospital and a nonpublic, nonsectarian school shall only be entered into when no appropriate public education program is available.