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Due to the ongoing COVID-19 pandemic, school district's across the state of Illinois have been asked to conduct summer school online for the summer of 2020.  District 155 leaders have identified essential courses.

Students will be expected to be engaged with their online work and activities for the duration of online summer school. Course-specific information will be shared with students that are enrolled in each course. With these classes being offered online, students will be expected to engage daily. Failure to do so will result in the student being dropped from the class with no refund.

The following summer school courses will be offered online this summer:

Consumer Education
U.S. History

***Please note: Only students enrolled in summer school prior April 30 are eligible to take summer school online for the courses listed above.***

Read More about Final Day of Summer School - Second Semester

Recent News

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2020-21 Registration Open

Registration for the 2020-2021 school year is now open. It’s important to follow the three-step process to complete registration to ensure a faster process. Please note, student information can be completed without payment.

If you are new to the district, please contact the Student Services office of the school your child should attend. 

For further registration information, please visit the Registration webpage.

Read More about 2020-21 Registration Open
This Week on #WorkforceWednesday: Meet the Co-Founder of Project Front Line

Devon Hubbard Tessmer, a 2001 Crystal Lake Central graduate, has co-founded Project Front Line McHenry County, a grassroots coronavirus relief effort with a mission to aid local restaurants and give back to workers on the front lines of the COVID-19 response. Tessmer and a committee of four other community members have raised nearly $45,000 towards the cause. 

Read More about This Week on #WorkforceWednesday: Meet the Co-Founder of Project Front Line

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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