WEWS-TV in Cleveland reports the science teacher at Orrville City Schools is also an officer with the nearby Lawrence Township Police Department.
Orrville City Schools Superintendent Jon Ritchie says there was little opposition to the move from the district, which is about an hour southwest of Cleveland.
Ritchie says the district approached the teacher about the idea. He says it saves the schools from hiring security personnel.
Orrville resident Nicole Walker tells the station that having someone armed inside her children's school following the Newtown, Conn., shooting puts her mind even more at ease.