Crystal Lake South High School
Public
High Grades 9–12
Part of CHSD 155
1200 S McHenry Ave, Crystal Lake, IL 60014 · (815) 455-3860
Community ratings
Not rated yetBe the first neighbor to rate this school — an overall score plus Teachers, Communication, Safety and Activities.
Academic performance
Math proficiency36%
State average 25.9%
Reading / language arts35%
State average 30.7%
EDFacts via Urban Institute Education Data Portal (SY2020-21)
At a glance
1,279Students enrolled
16:1Student–teacher ratio
32%Free / reduced lunch
SuburbSetting
Regular SchoolSchool type
Enrollment by grade
Grade 9311
Grade 10327
Grade 11305
Grade 12336
Students
White · 65%830
Hispanic · 26%329
Asian · 4%55
Black · 3%35
Two or more races · 2%26
American Indian/Alaska Native · 0%4
Counts as reported to NCES; percentages are of students with a reported race/ethnicity.
Enrollment · last 5 years
1,410’20
1,357’21
1,301’22
1,291’23
1,279’24
Location
1200 S McHenry Ave Crystal Lake
Neighbor reviews
Sign in to rate this school.
School facts from the U.S. Department of Education (NCES), 2024-2025 school year. Academic scores from the EDFacts via Urban Institute Education Data Portal (SY2020-21). Community ratings and reviews reflect neighbor opinions, not an official measure of school quality.