California Code, Government Code - GOV § 53205.3

School districts and community college districts may join with other school districts or community college districts, or any combination of those districts, in providing for the payment of health and welfare benefits by entering into a pooling arrangement under a joint exercise of powers agreement or on a self-insured or self-funded basis or partly by means of self-insurance or self-funding and partly by means of insurance or service agreements as herein described.  Any such arrangement, otherwise valid under this section, as amended by the Statutes of 1982, which was entered into prior to, and is in effect on the effective date of such amendments to this section, is hereby validated and confirmed.