Summer School

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 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.

Summer School Registration

Priority will be given to those who register first unless noted in the class description. Registration begins in March 2024, and deadlines are:
First Semester: April 19, 2024
Second Semester: May 24, 2024

Send your registration to your school’s student services department.

Students are not confirmed in a course until all fees have been paid online through Skyward Family Access which will be added once the paperwork has been received.

First Semester (May 23 - June 11, No Classes May 27)

Second Semester (June 12- July 2, No classes June 19)

Summer School Packet - English

Summer School Packet - Spanish

Early Elective Registration for Summer School 2024

Early registration is only available for the following courses.

Semester One (May 23 - June 11, No Classes May 27)
Consumer Education
Micro Internship
U.S. History
Visual Art and Technology

Semester Two (June 12- July 2, No classes June 19)
Consumer Education
U.S. History

Dates are subject to change due to winter weather closures during the regular school year.

Early registration begins on January 23, 2024 for select courses. For early registration, all fees must be paid by February 23, 2024 to secure a student's spot in class. Regular registration for other summer school courses will begin in spring 2024.

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.

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 South McHenry Ave
Crystal Lake, IL 60014 
Phone: (815) 455-3860

Summer School Tuition & Fees

All courses: 
One semester tuition $220
Two semesters tuition $440 

Course-Specific Fees: 
Visual Art and Technology $15 Supply Fee (plus $220 semester tuition)

*Note: There is a $15 late registration fee for all registrations received after the deadlines.*

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 (front of school) to Crystal Lake South
Leave at 6:45 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.