Jason A. Dimacchia, 38, is charged with sexual battery.
School officials contacted North Ridgeville police on Monday after a student told a teacher she was sexually assaulted in December, according to the police report.
Lake Ridge Academy said the suspect was a paid coach during the 2017-2018, then became a volunteer.
“We are cooperating fully with authorities and will continue to do so. State and federal laws prevent us from offering further information,” the school said in a statement on Thursday.
Counselors from the Cleveland Rape Crisis Center will be available at the school.