Ohio Revised Code Title XXXIII. Education Libraries § 3301.54

(B) Each preschool staff member shall be at least eighteen years of age and have a high school diploma or a certificate of high school equivalence issued by the department of education or a primary-secondary education or higher education agency of another state, except that a staff member may be less than eighteen years of age if the staff member is a graduate of a two-year vocational child-care training program approved by the state board of education, or is a student enrolled in the second year of such a program that leads to high school graduation, provided that the student performs duties in the preschool program under the continuous supervision of an experienced preschool staff member and receives periodic supervision from the vocational child-care training program teacher-coordinator in the student's high school.

A preschool staff member shall annually complete fifteen hours of inservice training in child development or early childhood education, child abuse recognition and prevention, and first aid, and in the prevention, recognition, and management of communicable diseases, until a total of forty-five hours has been completed, unless the staff member holds an associate or higher degree in child development or early childhood education from an accredited college, university, or technical college, or any type of educator license designated as appropriate for teaching in an associate teaching position in a preschool setting issued by the state board of education pursuant to section 3319.22 of the Revised Code.