A predominantly African American and Hispanic high school, Thornton is best known for its alumni who have been successful in both the Performing Arts and athletics.

[7] By May 1899, the plans had been firmed up to include a two-story structure with basement, with an interior to be finished in red oak.

Heat would be provided by steam, with electric fans and an automated clock and signal system.

[19] Thornton's sports teams, which are referred to as the Wildcats, compete in the Southland Athletic Conference.

The teams also compete in state championship series sponsored by the Illinois High School Association (IHSA).

The school sponsors interscholastic athletic teams for boys and girls in basketball, soccer, track and field and cross country.