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Crystal Lake South High School, 1200 S, McHenry Ave, Crystal Lake, IL 60014, USA
Community High School District 155 has canceled its Board of Education meeting scheduled for Tuesday, April 21 at Crystal Lake South High School. The meeting will be rescheduled for Tuesday, April 28 at the District Office at 7:30 p.m. The agenda will be published on Friday, April 24.

Recent News

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PR Student Awarded Congressional Silver Medal

Prairie Ridge senior, Ermina Hassan, was presented the Congressional Silver Medal for her efforts in the community by U.S. Representative Lauren Underwood on January 17. The Congressional Silver Medal recognizes outstanding young people who have donated their time toward the betterment of their community and demonstrated personal growth. Hassan has been involved as a volunteer at multiple local hospitals during her time in high school. 

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PR Student Saves Man’s Life

Calista Pollack, a junior at Prairie Ridge High School, relied on her CPR training from her health class to save a man’s life. She dropped her brother off for his Eagle Scout project when a man was in need of medical attention. They were on the phone with 911, and the dispatcher told Pollack to begin compressions and start counting.

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D155 By the Numbers


Graduation Rate


Student to Teacher Ratio


Dual Credit Offerings


of Graduates from the Class of 2019 are Continuing their Education


Earned in scholarships by the Class of 2019


Teachers with Master's Degree or Higher


Courses Offered


Sports and Extracurricular Activities Offered


Chromebook to Student Ratio

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