Lancaster High School is a secondary-level public high school located in Lancaster, Ohio, and is the only high school within the Lancaster City Schools district. The current building was opened during the fall of 1963, at a cost of $3,198,991.87. Currently, the building houses grades 9–12, a recent change due to the failure of multiple bond and levy issues voted down in local elections, forcing the closure of the freshmen-only Stanbery Campus of the high school.