Ohio Rev. Code Ann. § 3307.765
(B) A member of the state teachers retirement system who has contributions on deposit with, but is no longer contributing to, a uniform retirement system shall, in computing years of total service, be given full credit for transferred service credit if a transfer to the state teachers retirement system is made under this section. At the request of a member, the uniform system shall transfer to the state teachers retirement system the sum of the following:
(C) A member of the state teachers retirement system with at least eighteen months of contributing service credit with the state teachers retirement system who has received a refund of contributions to a uniform retirement system shall, in computing years of total service, be given full credit for transferred service credit if, for each year of service, the state teachers retirement system receives the sum of the following: