Ohio Rev. Code Ann. § 3317.028
(A) On or before the fifteenth day of May in each calendar year prior to calendar year 2007, the tax commissioner shall determine for each school district whether the taxable value of all tangible personal property, including utility tangible personal property, subject to taxation by the district in the preceding tax year was less or greater than the taxable value of such property during the second preceding tax year. If any such decrease exceeds five per cent of the district's tangible personal property taxable value included in the total taxable value used in computing the district's state education aid for the fiscal year that ends in the current calendar year, or if any such increase exceeds five per cent of the district's total taxable value used in computing the district's state education aid for the fiscal year that ends in the current calendar year, the tax commissioner shall certify both of the following to the department of education and the office of budget and management:
(B) On or before May 15, 2007, and the fifteenth day of May in each calendar year thereafter, the tax commissioner shall determine for each school district whether the taxable value of all utility tangible personal property subject to taxation by the district in the preceding tax year was less or greater than the taxable value of such property during the second preceding tax year. If any decrease exceeds five per cent of the district's tangible personal property taxable value included in the total taxable value used in the district's state aid computation for the fiscal year that ends in the current calendar year, or if any increase exceeds five per cent of the district's total taxable value used in the district's state education aid computation for the fiscal year that ends in the current calendar year, the tax commissioner shall certify both of the following to the department of education and the office of budget and management: