State law addresses vision screening.
Michigan Administrative Code R 325.13094 Frequency of screening
(2) Vision screening of school-age children shall, at a minimum, be done in grades 1, 3, 5, 7, 9, or grades 1, 3, 5, 7 and in conjunction with driver training. For school children who are not in graded programs, screening shall be done biennially starting at age 6.
Michigan’s Public Health Hearing & Vision Screening Programs
Flyer addresses vision screening in middle school.