School Profile

School Community

Crystal Lake South High School is a public, four-year high school with an enrollment of 1,339 students. Located approximately 45 miles northwest of Chicago, the school serves the cities of Crystal Lake and Lake in the Hills. Crystal Lake South offers a comprehensive curriculum and extracurricular activities to help students expand their academic and social skills, learn about themselves, engage in positive experiences, and be involved with community outreach. There are 24 varsity sports, 1 club sport, and 35 school activities.

Crystal Lake South ranked in the top eight percent of high schools nationally by U.S. News & World Report. Crystal Lake South has been recognized as a top high school for the last four years by U.S. News & World Report.

In District 155, 83% of teachers hold a master’s degree. The teacher-student ratio is 20:1. The school also employs five counselors, two social workers, one nurse, and one psychologist on its student services team.

Community High School District 155 includes four comprehensive high schools and one alternative education campus. Serving grades 9-12, each institution has full State of Illinois recognition and accreditation. Enrollment includes approximately 5,430 students from McHenry and Lake counties.

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Contact Us

Carson Sterchi
Student Services Coordinator
Phone: (815) 455-3860 Ext. 3228

Terri Fleter
Student Services Secretary
Phone: (815) 455-3860 Ext. 3226

Enrollment & Records
Kathy McCowan
Laura Julitz
Tracy Wells
Phone: (815) 455-8510

Hailey Baker
College & Career Center
Phone: (815) 455-3860 Ext. 3279