Ohio Revised Code Title XXXVII. Health Safety Morals § 3707.16

No person isolated or quarantined for a communicable disease declared by the board of health of a city or general health district or the department of health to require isolation or quarantine shall attend any public, private, or parochial school or college, Sunday school, church, or any other public gathering, until released from isolation or quarantine by the board. All school principals, Sunday school superintendents, or other persons in charge of such schools or other gatherings shall exclude any such person until he presents a written permit of the board to attend.