Assumption Preparatory School (for a while previously known as Assumption High School) was an American secondary boarding school located in Worcester, Massachusetts, and operated by the Catholic order Augustinians of the Assumption. It was closely associated with Assumption College: both trace their beginnings to 1904, when they were founded by French clergymen with the assistance of French-speaking Americans. Among the graduates of Assumption Preparatory School was the future U.S. Senator from Alaska and 2008 presidential candidate Mike Gravel in 1949.