A−
Crystal Lake South High School
PublicHighGrades 9–12
1200 S McHenry Ave, Crystal Lake, IL 60014 · (815) 455-3860 · Part of Community High School District 155
Students
1,279
Students per teacher
16:1
Free or reduced lunch
32%
Setting
Suburb
Grades
9–12
What stands out about Crystal Lake South High School
- School Grade A−: near the top of Illinois’s public schools
- Math proficiency 10 pts above the state
- Enrollment down 9.3% since 2020
On the path
Where Burtons Bridge kids come from and go next.
5–8Prairie Grove Junior High Schoolin Crystal Lake
9–12Crystal Lake South High SchoolYou are here
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency36%
State average 25.9%
Reading / language arts35%
State average 30.7%
Location
Directions ↗
1200 S McHenry Ave, Crystal Lake
Students
Enrollment by grade
Grade 9311
Grade 10327
Grade 11305
Grade 12336
Enrollment over time
1,410’20
1,357’21
1,301’22
1,291’23
1,279’24
Down 9.3% since 2020.
Who goes here
White 65%Hispanic 26%Asian 4%Black 3%Two or more races 2%American Indian/Alaska Native <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
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Parents talk
Conversations in Town Square that mention Crystal Lake South High School.
Other schools in Community High School District 155
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.