Cal. Ed. Code § 17368
"School building" as used in this article shall be limited to any physical structure capable of being occupied by pupils, but shall exclude, (a) any bleacher or grandstand with less than six rows of seats, (b) any building which is used exclusively for warehouse, storage, garage, or districtwide administrative office purposes, into which pupils are not required to enter, and buildings utilized by adult schools for off-campus, voluntary adult education courses or registered apprentice courses, (c) any swimming pool, or (d) any yard or lighting poles or flagpoles or playground equipment which does not exceed 35 feet in height.
"School building" as used in this article excludes any building owned or occupied by a unified school district, high school district, or a county superintendent of schools which is used exclusively for adult education purposes.
If any building so excluded was not constructed in accordance with Article 3 (commencing with Section 17280) of this chapter and was not repaired, reconstructed, or replaced in accordance with this article, there shall be posted in a conspicuous place on such building a public notice stating that such building does not meet the structural standards imposed by law for earthquake safety.
Ca. Educ. Code § 17368