Cal. Ed. Code § 32350
Any person, corporation, firm, or public entity, or employee thereof, who gratuitously loans equipment of any description or the services of an employee to a school district or community college district shall not be liable, and the school district or community college district shall be liable, for damages because of personal injuries to, or the death of any person or damage to property resulting from the operation of such equipment or an act or omission of such employee occurring while such equipment or employee is under the supervision and control of the district.
This section does not apply to any person, corporation, firm, or public entity who gratuitously loans mechanically defective equipment of any description or who gratuitously loans the services of an employee who is not fully qualified to perform such service, and such defect or lack of qualification is the cause of any damage or injury.
An employee whose services are loaned to a school district or community college district pursuant to this section remains an employee of his employer for all purposes, including the application of the provisions of the Labor Code relating to workmen's compensation.
For the purposes of this section, "public entity" includes the state, the Regents of the University of California, a county, city, city and county, district, public authority, public agency, or any other political subdivision or public corporation in this state.
Ca. Educ. Code § 32350