South, TF South, TFS) is a high school located in Suburban Cook County, Illinois, located about 6 miles (9.7 km) from the city limits of Chicago, 24 miles (39 km) south of Downtown Chicago. Thornton Fractional Township South High School is one of three high schools in the Village of Lansing, the others being Luther East High School & Illiana Christian High School. The school serves an area of approximately 9 square miles (23 km2), & serves over 2,000 students in grades 9-12 who reside in the near South Suburban communities of Lansing & Lynwood. Due to growth in the Calumet City-Lansing, Il area, Thornton Fractional South High School was opened in 1958 to subsidize the student population. The original high school in Calumet City that first opened in 1926 was renamed from Thornton Fractional High School to Thornton Fractional North High School.
