Thornton Fractional South High School is a public high school located in Lansing, Illinois. It is part of the Thornton Fractional Township High School District 215 and serves students in grades 9 through 12. The school offers a variety of academic programs, extracurricular activities, and sports to support student development and engagement. Established in 1964, Thornton Fractional South has a diverse student body and a commitment to fostering a positive learning environment. The school emphasizes academic excellence and encourages students to participate in community service and leadership opportunities, preparing them for future success.