California Code, Education Code - EDC § 51139

(a) “Public school” means a school operated by a school district, county office of education, or a charter school.

(b) “Water safety” means age-appropriate education intended (1) to promote safety in, on, and around bodies of water, including residential and public pools and spas, home water sources such as bathtubs, and open bodies of water such as lakes, rivers, canals, and the ocean, and (2) to reduce the risk of injury or drowning.