Amos Alonzo Stagg High School, Stagg, or AAS, is a public four-year high school located at the intersection of S. Roberts Rd. and W. 111th Street in Palos Hills, Illinois, a southwest suburb of Chicago, Illinois, in the United States. It is part of Consolidated High School District 230, which also includes Victor J. Andrew High School and Carl Sandburg High School.

Palos Hills is a city in Cook County, Illinois, United States. It is a southwest suburb of Chicago. The city was established in 1958 and had reached a population of 18,530 in the 2020 census. It is the home of Moraine Valley Community College as well as Amos Alonzo Stagg High School.