The parent or guardian of a child of compulsory school age shall secure and keep on file the proper age and schooling certificate of the parent's or guardian's child or ward if such child or ward is employed by the parent or guardian.
Age and schooling certificate to be kept on file by parent or guardian
Ohio Rev. Code Ann. § 3331.14, under Chapter 3331 | Age and Schooling Certificates.
Ohio Rev. Code Ann. § 3331.14