Mercyhurst Preparatory School, commonly called Mercyhurst Prep or MPS, is a Catholic, coeducational secondary school located in Erie, Pennsylvania. In the Roman Catholic Diocese of Erie, the school is located behind Mercyhurst University on East Grandview Boulevard. It is a member of the International Baccalaureate program. Mercyhurst Preparatory School is accredited by the Middle States Association under the Accreditation for Growth protocol.