Community High School District 155

A Cary-Grove graduate high fives a staff member at the start of the commencement ceremony.

A Prairie Ridge graduate hugs a staff member during commencement.

Two Central graduates pose before the commencement ceremony begins.

A Haber Oaks graduate speaks during commencement.

CLS graduates toss their caps into the air.

A student in the STRIVE program poses with Board member Dave Jenkins while receiving his diploma.

Upcoming Events

View Full Calendar

A girl in a green graduation cap and gown is smiling and waving.

Current Families

We partner with families to support their students’ educational journey, ensuring students enter with promise and leave with purpose.

Parent & Guardian Resources

A girl and her mom are at a table during distribution days learning about Crystal Lake Central.

New Families

We foster belonging, strong relationships, and provide relevant, engaging coursework so every student feels known, supported, and challenged.

Learn More About Us

Latest News

Stay up to date on district news, events, and more with the ParentSquare app!

June 1, 2026

Free Summer Lunches Available for Students at Ladd Park

Free summer lunches for children 18 and under will be served Mon–Fri June 1–Aug 7 at Ladd Park from 11:30 AM–12:30 PM. No registration needed, lunches must be eaten at the park.

April 1, 2026

(CLS) Graduation and End of Year Activities

Graduation and End of Year Information Graduation and End of Year Activities Graduation is right around the corner as I'm sure you all know. We are so excited for you as you wind up your high schoo...

March 24, 2026

D155 Board of Education Awarded Governance Recognition

D155 was one of 42 Illinois school districts to earn the School Board Governance Recognition honor for their effective governance.

February 23, 2026

D155’s Dr. Lesinski Named Superintendent of Distinction

Dr. Neil Lesinski, superintendent of Community High School District 155, has been named the 2026 Superintendent of Distinction by the Kishwaukee Region of the Illinois Association of School Adminis...

November 20, 2025

D155 Board Approves Two New Principals for Next School Year

Community High School District 155’s Board of Education approved Dan Nicholas as the next principal of Cary-Grove High School and Dan DeBruycker as the next principal of Crystal Lake South High

November 11, 2025

Providing Essential Resources for Students Across Our Schools

The student services professional learning team recently came together to brainstorm ways to support students who could benefit from additional resources. One idea quickly turned into action:

93%

Graduation Rate

#1

District in McHenry County

225+

Courses Offered

37

Dual Credit Offerings

$11.5M

Scholarships Earned by Class of 2025

#1

Best Teachers in McHenry County

81%

Teachers w/ Master's Degree or Higher

200+

Sports & Extracurricular Activities Offered

Community High School District 155

Career Experiences Program

Curriculum and Assessment

Multilingual Services

CALENDAR

SCHOOL SCHEDULES

ENROLLMENT

EMPLOYMENT

PARENTSQUARE

SKYWARD

Upcoming Events

Latest News

Free Summer Lunches Available for Students at Ladd Park

(CLS) Graduation and End of Year Activities

D155 Board of Education Awarded Governance Recognition

D155’s Dr. Lesinski Named Superintendent of Distinction

D155 Board Approves Two New Principals for Next School Year

Providing Essential Resources for Students Across Our Schools

93%

#1

225+

37

$11.5M

#1

81%

200+

Homepage

CALENDAR

SCHOOL SCHEDULES

ENROLLMENT

EMPLOYMENT

PARENTSQUARE

SKYWARD

Upcoming Events

Latest News

Free Summer Lunches Available for Students at Ladd Park

(CLS) Graduation and End of Year Activities

D155 Board of Education Awarded Governance Recognition

D155’s Dr. Lesinski Named Superintendent of Distinction

D155 Board Approves Two New Principals for Next School Year

Providing Essential Resources for Students Across Our Schools

93%

#1

225+

37

$11.5M

#1

81%

200+