"School building" as used in this article excludes any building operated by an official or board of a public entity for purposes other than educational, notwithstanding any educational use thereof incidental to the other primary purpose.
For purposes of this section, a public entity includes, but is not limited to, a city, city and county, county, or special district, but does not include a school district or county superintendent of schools.
Ca. Educ. Code § 17369