Ohio Rev. Code § 3345.281
As used in this section, "teaching assistant" means a student enrolled full-time or part-time in a graduate degree program at an educational institution for which the student has received an appointment to provide classroom-related services.
The board of trustees of each state university, medical university, technical college, state community college, community college, and the board of trustees or managing authority of each university branch shall establish a program to assess the oral English language proficiency of all teaching assistants providing classroom instruction to students and shall ensure that teaching assistants who are not orally proficient in the English language attain such proficiency prior to providing classroom instruction to students.
R.C. § 3345.281