Cal. Health and Safety Code § 120430

(a) The Legislature finds and declares that 1990 marks one of the worst measles epidemics in recent history and that this epidemic threatens the health and safety of our schoolaged children. The Legislature finds and declares that, according to the Center for Disease Control and the American Academy of Pediatrics, current medical technology suggests that in order to be fully immunized against measles, children should receive two doses of the immunization agent for measles before the age of seven years. It is the intent of the Legislature to ensure that all possible steps are taken to combat the spread of any disease through California schools. (b) The department, in consultation with the State Department of Education, shall develop and adopt regulations to ensure that every student in any private or public elementary or secondary school, child care center, day nursery, nursery school, or development center shall have access to full immunization against measles, as determined by the Center for Disease Control, to the extent funds are available. Priority shall be given to children who have not received any type of measles immunization.