School Information

Crystal Lake Central is consistently ranked among the best public high schools in Illinois and offers students a comprehensive 9-12 grade education. Students have the opportunity to choose from more than 200 courses including Advanced Placement®, dual credit, Mobile App Development, Project Lead the Way (PLTW), and Virtual Enterprises International (VEI).

Crystal Lake Central is recognized nationally, and appeared on the Washington Post 2014 List of America’s Most Challenging Schools. The Chicago Sun-Times has listed Crystal Lake Central as the 150th best public high school in the state out of 677 high schools. Along with the other District 155 schools, Crystal Lake South appeared on the College Board's 2017 AP® District Honor Roll for the sixth consecutive year.

In athletics, the Crystal Lake Central Tigers compete in the Fox Division of the Fox Valley Conference. The school has captured state titles in girls' volleyball (2007), competitive dance (2013), and wrestling (2016).

Crystal Lake Central offers students 33 clubs and activities and several opportunities in performing and fine arts.

Crystal Lake Central opened in 1924 as Crystal Lake Community High School and is the oldest high school in District 155. Central has a rich history and several proud alumni. In the 1930s, Crystal Lake Community High School produced Charlie Behan, a professional football player and a World War II hero who was awarded the Navy Cross for his acts of valor during the Battle of Okinawa in May 1945. Central also counts ABC 7 Chicago Anchors/Reporters Rob Elgas and Mark Rivera and, Neon Trees' drummer Elaine (Doty) Bradley.

Crystal Lake Central is located approximately 45 miles north­west of Chicago, and  serves Crystal Lake and Lakewood.


2014 Washington Post - Most Challenging High School
2017 AP® District Honor Roll

Crystal Lake: 1,508
District 155: 6,113

PR Average Class Size: 17
D155 Average Class Size: 18

Teachers with a 
Master's Degree or Higher
: 86%

4-Year Graduation Rate
Crystal Lake Central:
District 155: 95%
State: 86%

Scholarships earned in 2017-2018: $3,010, 402

Students continuing their education: 91% 

2017-2018 SAT Average
Crystal Lake Central ELA: 542.8
Crystal Lake Central Math: 539.3

District 155 ELA: 540.1
District 155 Math: 549.9

State ELA: 505.7
State Math: 504.1

2017-18 Advanced Placement® & Dual Credit

AP®Exams Taken
Crystal Lake Central:
District 155: 3,130

Number AP® Exams Resulting in College Credit 
Crystal Lake Central:
District 155: 2,499

Dual Credit Courses & Enrollment

Autos II                                      22
     -McHenry County College
Calculus                                     26
     - University of Illinois
Computer Business App.       282
      -McHenry County College
Culinary Arts II Commercial    32
      -McHenry County College
Marketing                                   81
      -McHenry County College
Music Appreciation                   33
      -McHenry County College
Spanish IV                                  289
      -McHenry County College