William Mason High School, also known as Mason High School (WMHS or MHS), is a four-year public high school located in the Mason City Schools district in Mason, Ohio, a suburb of Cincinnati, Ohio. Its enrollment makes it the largest high school in Ohio, serving more than 3,300 students in grades 9 through 12 in a 620,000 square-foot, three-story facility on a 73-acre campus.
