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. In 2010 Mercyhurst Prep was reaccredited until November 2017.