Summer School

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.***

Students can take a variety of classes during the summer. If you are interested in in Summer School, please understand that students must reside in District 155 boundaries and meet other requirements in order to be eligible for enrollment. With the exception of driver’s education courses, all summer school courses will be held at Crystal Lake South High School located at 1200 S. McHenry Ave, Crystal Lake, IL 60014. The main office number is (815) 455-3860. Driver’s education courses meet at the student’s home school.

A variety of special education courses and programs are offered during the summer.​ Information regarding Extended School Year-Special Education will be mailed to families after spring break.​ 

Any student who plans to attend summer school—including students with an IEP—should contact the student services department at his/her high school and register as soon as possible. Student services offices in all District 155 schools are open every weekday from 7 a.m. to 4 p.m. during the school year, and from 7 a.m. to 3:30 p.m. (Mon.-Thur.) or 12 p.m. (Fridays) during the summer. Please note: Some courses may not be offered due to insufficient enrollment.

Registration Information

Registration Begins: March 2

First Semester Registration Deadline: April 24
Second Semester Registration Deadline: April 30
First Semester: June 1 - June 19
Second Semester: June 22 - July 13
No Classes: July 3 

Summer School Packet - English

summer school packet - spanish

Early Elective Registration for Summer School 2020

Early registration is only available for the following courses.

Semester One (June 1 - June 19)
Consumer Education
U.S. History
Visual Art and Technology

Semester Two (June 22 - July 13)
Consumer Education
U.S. History

School will not be in session on July 3. 
Dates are subject to change due to winter weather closures during the regular school year.

Early registration begins on January 15, 2020 for select courses. Regular registration for other summer school courses will begin in March 2020.

early elective summer school information - english

Early elective summer school information - spanish

Class Credit 

Unless otherwise noted, a ½-credit may be earned from successful completion of each semester of summer school coursework. Students may repeat courses they have previously passed, with the higher of the two grades entered on their permanent record. However, the student will only receive credit for the course once. Regardless of the course, all students must be present for the final exams.

Book Rental

Tuition fees cover the rental of textbooks, while required workbooks and any other supplementary supplies must be purchased by the student. Books will be distributed the first day of class and must be returned on the last day. Students are expected to return the books in the same condition as they were received. Students will be charged for lost or damaged books. 

Please note: This page contains links to documents that are in Adobe's PDF format.  If you have accessibility needs that make it difficult for you to access and / or interpret information in PDF format, please call 815-455-8500 or email, and we will be happy to assist you. 


Crystal Lake South High School
1200 S. McHenry Avenue
Crystal Lake, IL 60014 
Phone: (815) 455-3860

Summer School Tuition & Fees

All courses: 
One semester tuition $180 
Two semesters tuition $360 

Course-Specific Fees: 
Visual Art and Technology $15 Supply Fee (plus $180 semester tuition)

*Note: There is a $15 late registration fee for all registrations received after the deadlines (April 26 for
first semester classes and May 31 for second semester classes).*

Daily Class Schedule

Period 1 - 7:30 - 8:20 a.m.
Period 2 - 8:25 - 9:20 a.m.
Period 3 - 9:25 - 10:20 a.m.
Period 4 -  10:25 - 11:20 a.m.
Period 5 - 11:25 a.m. - 12:20 p.m.


Bus service to Crystal Lake South High School is provided at no charge to students from Cary-Grove High School, Crystal Lake Central High School, and Prairie Ridge High School. The bus schedule is as follows: 

Cary-Grove (front of school) to Crystal Lake South
Leave at 6:45 a.m. 
Return to CG by 12:55 p.m. 

Crystal Lake Central (main entrance) to Crystal Lake South
Leave at 6:55 a.m. 
Return to CLC by 12:55 p.m. 

Prairie Ridge (front of school) to Crystal Lake South
Leave at 6:45 a.m. 
Return to PR by 12:55 p.m.