Section R. 325.3274 - Frequency of screeningRule 4.
(1) Hearing screening of preschool children shall be done at least once during the ages of 3 to 5 years.(2) Hearing screening of school-age children shall be done at least in grades K, 2, and 4, or screening shall be done at least biennially starting at age 5 and continuing at least to age 10 years.Mich. Admin. Code R. 325.3274