(A) Application for the purchase of service credit pursuant to section 3307.78 of the Revised Code shall be made on a form approved by the retirement system and shall include certification of the service.

(B) A member may purchase credit for service as a school board or governing board member prior to July 1, 1991 if the member meets the requirements set forth in section 3307.78 of the Revised Code. A member may purchase credit for concurrent service as a member of more than one school board or governing board, provided that the total of all service credit earned or purchased for any school year shall not exceed one year.

(C) Effective January 1, 2014, the cost pursuant to section 3307.70 of the Revised Code for the purchase of service credit under section 3307.78 of the Revised Code shall be determined as specified in rule 3307:1-3-13 of the Administrative Code.