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Alumni: what's one memory from Glenbrook South High School that still sticks with you?
Community prompt from u/allk12. Replies below.
Enrollment
2,923
High
DISTRICT 2,517 · STATE 834
SCHOOL COMMUNITY·GLENBROOK HSD 225·NCES 172901003043
Glenbrook South High School
4000 W Lake Ave, Glenview, IL 60026 · (847) 729-2000 · Cook County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL2,923 STUDENTS
A+
allk12 Grade
Scored higher than 97% of Illinois public high schools
- A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ·Beats expectations Not available for this school, so the grade uses the other parts.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Illinois public high schools
Student : Teacher
12.9:1
227 FTE teachers
DISTRICT 13.0:1 · STATE 13.8:1
Free / Reduced Lunch
,
Title I proxy
STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 638 | 22% |
| Grade 10 | 755 | 26% |
| Grade 11 | 763 | 26% |
| Grade 12 | 767 | 26% |
Student demographics
63%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 58% · STATE 69% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Where Glenbrook South High School ranks
Among high schools| Measure | This school | In Illinois | In Cook County |
|---|---|---|---|
| Enrollment ranked largest first | 2,923 | #19 of 708 | #9 of 206 |
| Students per teacher ranked fewest first | 12.9:1 | #153 of 528 | #38 of 173 |
| Diversity index ranked most diverse first | 62.7% | #82 of 537 | #30 of 180 |
| Enrollment change since 2017-18 ranked steepest decline first | -4.7% | #265 of 358 | #73 of 101 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
2,923
-216 (-7%) vs 2020
+53% since 1990-91, when it was 1,907
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 2,923 | 227.4 | 12.9:1 | N/A |
| 2023-24 | 3,015 | 228.7 | 13.2:1 | N/A |
| 2022-23 | 3,030 | 222.4 | 13.6:1 | N/A |
| 2020-21 | 3,139 | N/A | N/A | N/A |
| 2017-18 | 3,067 | 188.1 | 16.3:1 | 20% (609) |
| 2015-16 | 2,910 | 204 | 14.3:1 | 21% (617) |
| 2010-11 | 2,560 | 185 | 13.8:1 | N/A |
| 2000-01 | 2,390 | 161 | 14.8:1 | N/A |
| 1990-91 | 1,907 | 141 | 13.5:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Glenbrook South High School.
Since 2017-18: students down 5% (3,067 to 2,923); teachers up 21% (188.1 to 227.4).
About Glenbrook South High School
As a large high school, Glenbrook South High School serves students in Glenview, Illinois. The school's enrollment of 2,923 students covers grades 9 through 12. Enrollment is 250% higher than the average for high schools in Illinois, which is about 834.
Glenbrook South High School is one of the 2 schools that make up Glenbrook HSD 225 (5,034 students in total).
At 54%, White students outnumber all other groups at Glenbrook South High School combined. Smaller groups are 23% Asian, 16% Hispanic, and 5% multiracial. County-wide, 44% of Cook County residents are White. By the diversity index, Glenbrook South High School comes in at 63%.
Federal data list 227.4 full-time-equivalent teachers at Glenbrook South High School in 2024-25, for a ratio of 12.9:1. The average ratio among high schools in Illinois is 13.8:1, higher than at this school.
The allk12 Grade for Glenbrook South High School is A+. Compared with Illinois public high schools, the school scored higher than 97% on a mix of test scores, poverty-adjusted results, and recent trend.
Cook County has about 5,182,090 residents, and median household income is about $83,498, about 43% of adults have at least a bachelor's degree, and roughly 10% of residents are in poverty. Federal data list 1,406 public schools in Cook County, with a combined enrollment of about 697,934.
Nearest public school: Henry Winkelman Elementary School, about 0.5 miles away. Other public schools within five miles: at least 8.
The school's locale code, Suburb: Large, means it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
The student count in 2024-25 was 2,923, 7% below the 3,139 of 2020-21.
Posts about sports tryouts, band and choir, and theater are welcome on this page. Reviews and ratings from people who know the school are welcome.
Cook County at a glance
View full county profilePopulation
5,182,090
Census ACS
Median income
$83,498
Household, ACS
Bachelor's+
43%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
1,406
697,934 students
Quick facts
Related schools
Other schools in Glenbrook HSD 225
- Glenbrook North High SchoolHigh · 2,111 students
- Glenbrook Evening High SchoolHigh
- Glenbrook Off CampusHigh
Other schools in Glenview
- Springman Middle SchoolMiddle · 811 students
- Attea Middle SchoolMiddle · 714 students
- Henry Winkelman Elementary SchoolElementary · 677 students
- Pleasant Ridge Elementary SchoolElementary · 492 students
- Hoffman Elementary SchoolElementary · 481 students
- Henking Elementary SchoolElementary · 470 students
Nearby schools
- Henry Winkelman Elementary School0.5 mi · 677
- Westbrook Elementary School0.9 mi · 467
- Willowbrook Elementary School0.9 mi · 330
- Glen Grove Elementary School1.1 mi · 398
- Attea Middle School1.6 mi · 714
- Henking Elementary School1.7 mi · 470
Frequently asked questions
About Glenbrook South High SchoolHow large is Glenbrook South High School?
Glenbrook South High School enrolls approximately 2,923 students in grades 09-12.
What grades does Glenbrook South High School serve?
Glenbrook South High School serves grades 09-12.
How many teachers does Glenbrook South High School have?
Glenbrook South High School employs 227 FTE teachers, for a student-to-teacher ratio of 12.9:1.
How diverse is Glenbrook South High School?
Glenbrook South High School reports a student body of 54% White, 16% Hispanic, 2% Black, 23% Asian, 5% Two or more.
Is Glenbrook South High School public or private?
Glenbrook South High School is a public K-12 school, overseen by Glenbrook HSD 225.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.