Thornton Fractional Township South High School (TF South, TFS) is a high school located in Suburban Cook County, Illinois, located 6 miles (9.7 km) from the city limits of Chicago.

[12] The associated Rebel mascot name was later retired in 2020,[13] and replaced with the Red Wolves in 2022.

North, and CAT, combined had an average composite ACT score of 18.7.

South has not made Adequate Yearly Progress (AYP) on the Prairie State Achievement Examination, PSAE, a state test used in Illinois to fulfill the mandates of the federal No Child Left Behind Act.

[16] The school sponsors interscholastic teams in Badminton, Baseball, Basketball, Bowling, Cheerleading, Cross Country, Dance, Football, Golf, Soccer, Softball, Swimming, Tennis, Track and Field, Volleyball, and Wrestling.