Ohio Rev. Code Ann. § 2923.129
(A)
(1) If a sheriff, the superintendent of the bureau of criminal identification and investigation, the employees of the bureau, the Ohio peace officer training commission, or the employees of the commission make a good faith effort in performing the duties imposed upon the sheriff, the superintendent, the bureau's employees, the commission, or the commission's employees by sections 109.731, 311.41, and 2923.124 to 2923.1213 of the Revised Code, in addition to the personal immunity provided by section 9.86 of the Revised Code or division (A)(6) of section 2744.03 of the Revised Code and the governmental immunity of sections 2744.02 and 2744.03 of the Revised Code and in addition to any other immunity possessed by the bureau, the commission, and their employees, the sheriff, the sheriff's office, the county in which the sheriff has jurisdiction, the bureau, the superintendent of the bureau, the bureau's employees, the commission, and the commission's employees are immune from liability in a civil action for injury, death, or loss to person or property that allegedly was caused by or related to any of the following:
(3) An entity that or instructor who provides a competency certification of a type described in division (B)(3) of section 2923.125 of the Revised Code is immune from civil liability that might otherwise be incurred or imposed for any death or any injury or loss to person or property that is caused by or related to a person to whom the entity or instructor has issued the competency certificate if all of the following apply:
(4) An entity that or instructor who, prior to March 27, 2013, provides a renewed competency certification of a type described in division (G)(4) of section 2923.125 of the Revised Code as it existed prior to March 27, 2013, is immune from civil liability that might otherwise be incurred or imposed for any death or any injury or loss to person or property that is caused by or related to a person to whom the entity or instructor has issued the renewed competency certificate if all of the following apply: