California Code, Education Code - EDC § 49414.6

(a) Notwithstanding any other law or regulation, local educational agencies shall not prohibit pupils in middle schools, junior high schools, high schools, or adult schools, while on a schoolsite or participating in school activities, from carrying fentanyl test strips or a federally approved opioid antagonist for over-the-counter use for the emergency treatment of persons suffering, or reasonably believed to be suffering, from an opioid overdose.

(b) For purposes of this section, “local educational agency” means a school district, county office of education, or charter school.