Ohio Rev. Code Ann. § 3320.03

No school district board of education, governing authority of a community school established under Chapter 3314. of the Revised Code, governing body of a STEM school established under Chapter 3326. of the Revised Code, or board of trustees of a college-preparatory boarding school established under Chapter 3328. of the Revised Code shall prohibit a student from engaging in religious expression in the completion of homework, artwork, or other written or oral assignments. Assignment grades and scores shall be calculated using ordinary academic standards of substance and relevance, including any legitimate pedagogical concerns, and shall not penalize or reward a student based on the religious content of a student's work.