State law addresses vision screening.
A Guide for Vision Screening in California Public Schools
This document provides highlights vision screening requirements and provides guidance to schools.
California Education Code 49455 Physical Examinations
(a) (1) During the kindergarten year or upon first enrollment or entry in a California school district of a pupil at an elementary school, and in grades 2, 5, and 8, the pupil's vision shall be appraised by the school nurse or other authorized person under Section 49452.