Crystal Lake South High School is a public high school located in Crystal Lake, Illinois. It is part of the Community High School District 155 and serves students in grades 9 through 12. The school offers a variety of academic programs, extracurricular activities, and sports teams to support student development and engagement. The campus features modern facilities, including classrooms, laboratories, and athletic fields. Crystal Lake South is known for its commitment to academic excellence and community involvement, providing students with opportunities to excel both in and out of the classroom.