Arlington Heights is a village in Cook County, Illinois, United States. A northwestern suburb of Chicago, it lies about 25 miles (40 km) northwest of the city's downtown. As of the 2020 census, the village's population was 77,676, making it the 15th-most populous municipality in Illinois.

Prospect High School, or Prospect, is a public four-year high school in Mount Prospect, Illinois, United States. It is part of Township High School District 214, which also includes Buffalo Grove High School, Elk Grove High School, John Hersey High School, Rolling Meadows High School, and Wheeling High School. It serves central Mount Prospect and a large portion of east Arlington Heights close to the Mt. Prospect village limits. Its feeder schools are Lincoln Middle School, South Middle School, Friendship Junior High School and Holmes Junior High School.