Excellent
#436 of 3,813 schools in IL
Top 11% in state
Crystal Lake South High School
High School · CHSD 155
1200 S McHenry Ave, Crystal Lake, IL 60014
Enrollment
1,291
Student-Teacher
17.4:1
Score
8.2
Grades
9th – 12th
Enrollment
1,291
Student-Teacher
17.4:1
Score
8.2
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Illinois schools
#436 of 3,813
In Crystal Lake
#2 of 17
public schools
In district
#3 of 4
CHSD 155
Academic growth
9.4 / 10
Excellent
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Crystal Lake South High School
High School in Crystal Lake · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Lundahl Middle School
1.0 mi away. Use as a geographic alternative in the same move search.
Coventry Elem School
0.8 mi away. Use as a geographic alternative in the same move search.
About Crystal Lake South High School
Crystal Lake South High School is a public high school in Crystal Lake, IL, part of CHSD 155. Crystal Lake South High School serves approximately 1,291 students, and covers grades 9th-12th, and has a 17.4:1 student-teacher ratio. Crystal Lake South High School has a current MySchoolScout rating of 8.2 out of 10 and ranks #436 of 3,813 schools in IL.
Structured state assessment records for Crystal Lake South High School show 48% math proficiency (multi-year average, 2009-2021) and 49% reading/ELA proficiency (multi-year average, 2009-2022).
- This school 8.2 · Excellent
- District avg 8.3
- IL avg 6.6
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
View breakdown
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Crystal Lake South High School — Students at Crystal Lake South High School score 38% proficient, which is above what's typical for similar communities (expected: 35%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
30.6%
Students qualifying for federal meal assistance
Test Scores IL EDFACTS (2021-22)
Based on 27 test records from IL state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 9.4/10.
How Crystal Lake South High School Compares
See how Crystal Lake South High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
1200 S McHenry Ave, Crystal Lake, IL 60014
Nearby Alternatives
Families considering Crystal Lake South High School may also want to explore other high schools in the area. Harry D Jacobs High School (rated 8.0/10, 3.0 miles away, in nearby Algonquin), with a very similar rating. Additionally, Crystal Lake Central High School (rated 7.7/10, 2.0 miles away), with a comparable rating. For more schools in Crystal Lake, see our Crystal Lake schools guide .
Nearby Schools
20 within 2.8 mi| School | Distance | Rating |
|---|---|---|
| Lundahl Middle School Crystal Lake | 1.0 mi | 5.4 |
| Coventry Elem School Crystal Lake | 0.8 mi | 6.1 |
| South Elem School Crystal Lake | 1.2 mi | 7.0 |
| Indian Prairie Elem School Crystal Lake | 1.3 mi | 6.3 |
| Canterbury Elem School Crystal Lake | 1.1 mi | 5.2 |
| ST THOMAS THE APOSTLE SCHOOL Crystal Lake | 1.5 mi | 7.2 |
| Woods Creek Elementary School Crystal Lake | 1.3 mi | 7.8 |
| Glacier Ridge Elementary School Crystal Lake | 1.6 mi | 7.7 |
| IMMANUEL LUTHERAN SCHOOL Crystal Lake | 1.8 mi | 4.1 |
| Husmann Elem School Crystal Lake | 2.1 mi | 7.2 |
| Crystal Lake Central High School Crystal Lake | 2.0 mi | 7.7 |
| Lincoln Prairie Elem School Lake In The Hills | 2.2 mi | 6.1 |
| North Elem School Crystal Lake | 2.4 mi | 6.3 |
| Richard F Bernotas Middle Sch Crystal Lake | 2.5 mi | 6.8 |
| Lake in the Hills Elem School Lk In The Hls | 2.3 mi | 5.1 |
| THE GODDARD SCHOOL Lake In The Hills | 2.2 mi | — |
| Harry D Jacobs High School Algonquin | 3.0 mi | 8.0 |
| MONTESSORI PATHWAYS SCHOOL Crystal Lake | 2.7 mi | — |
| West Elem School Crystal Lake | 2.6 mi | 7.9 |
| Hannah Beardsley Middle School Crystal Lake | 2.8 mi | 5.0 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 60014 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$104,657
Median Home Value
$296,100
Median Rent
$1,429/mo
Population
48,383
College Educated
41.7%
Homeownership
80.6%
Avg Commute
29.9 min
Poverty Rate
6.6%
Median Age
39.9
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Brooks College Prep Academy HS Chicago, IL | 8.2 |
| Intrinsic Charter High School Chicago, IL | 8.2 |
| Back of The Yards IB HS Chicago, IL | 8.1 |
| Riverside Brookfield Twp HS Riverside, IL | 8.1 |
| Woodstock North High School Woodstock, IL | 8.1 |
| Batavia Sr High School Batavia, IL | 8.3 |
Frequently Asked Questions
Common questions about Crystal Lake South High School
What grades does Crystal Lake South High School serve?
Crystal Lake South High School serves students in grades 9th through 12th.
How many students attend Crystal Lake South High School?
Crystal Lake South High School has an enrollment of approximately 1,291 students.
What is the student-teacher ratio at Crystal Lake South High School?
The student-teacher ratio at Crystal Lake South High School is 17.4:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Crystal Lake South High School rank in IL?
Crystal Lake South High School ranks #436 of 3,813 schools in IL.
What is Crystal Lake South High School's MySchoolScout rating?
Crystal Lake South High School has a current MySchoolScout rating of 8.2 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Crystal Lake South High School?
Based on loaded state assessment records, Crystal Lake South High School has 48% math proficiency (multi-year average, 2009-2021) and 49% reading/ELA proficiency (multi-year average, 2009-2022).
Is Crystal Lake South High School a charter school?
No, Crystal Lake South High School is not a charter school. It is a traditional public school operated by the local school district.
Is Crystal Lake South High School a Title I school?
No, Crystal Lake South High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Crystal Lake South High School?
30.6% of students at Crystal Lake South High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,291
- Student-Teacher Ratio
- 17.4:1
- Teachers (FTE)
- 74
- Free/Reduced Lunch
- 30.6%
- Type
- regular
- Setting
- Large Suburb
- County
- McHenry County
- Chronic Absenteeism (SY 2022-23)
- 23.5%
- Phone
- (815) 455-3860
Resources & Links
District
CHSD 155- District Enrollment
- 5,340
- Schools in District
- 5
- Per-Pupil Spending
- $23,700
- District Rank
- #3 of 4
Other Schools in This District
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