St. Lawrence Seminary High School is a Catholic College preparatory boarding school that has been in operation for more than 150 years and is operated by the Province of St. Joseph of the Capuchin Order. The school is in the Archdioces of Milwaukee and is an all-male boarding school with approximately 225 students enrolled in grades 9 through 12. The school's mission is to prepare its male students for vocations in the Roman Catholic Church. The campus boasts across 150 acres across one of the highest points in the little town of Mt. Calvary. Students attend from all over the world and represent many social and economic backgrounds.