Ohio Rev. Code § 3319.314
The board of education of each school district, the governing board of each educational service center, and the chief administrator of each chartered nonpublic school shall require that the reports of any investigation by the district board of education, service center governing board, or nonpublic school chief administrator of an employee regarding whether the employee has committed an act or offense for which the district or service center superintendent or board president or nonpublic school chief administrator or governing authority president or chairperson is required to make a report to the superintendent of public instruction under section 3319.313 of the Revised Code be kept in the employee's personnel file. If, after an investigation under division (A) of section 3319.311 of the Revised Code, the superintendent of public instruction determines that the results of that investigation do not warrant initiating action under section 3319.31 of the Revised Code, the board of education, governing board, or chief administrator shall require the reports of the board's or chief administrator's investigation to be moved from the employee's personnel file to a separate public file.
R.C. § 3319.314