Cal. Health & Safety Code § 1596.806
(a) A room used as a classroom by a schoolage childcare program shall not be required to meet the square footage or toilet requirements for child daycare centers if the program is operated on either of the following:
(2) A functioning schoolsite in facilities certified as usable as a classroom for instruction. A building owned by a school district, the state, or the schoolage child care program may meet the certification requirement if either of the following is provided to the department:
(b) School grounds, other than rooms used as classrooms, used by a schoolage childcare program operated on a functioning schoolsite pursuant to either paragraph (1) or (2) of subdivision (a) shall be exempt from all of the following requirements imposed by the department on child daycare facilities:
(d)