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What's one thing Glenbard South High School gets right about preparing students for what comes next?
Community prompt from u/allk12. Replies below.
Enrollment
1,090
High
DISTRICT 1,953 · STATE 834
SCHOOL COMMUNITY·GLENBARD TWP HSD 87·NCES 171683001990
Glenbard South High School
23W200 Butterfield Rd, Glen Ellyn, IL 60137 · (630) 469-6500 · DuPage County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,090 STUDENTS
A
allk12 Grade
Scored higher than 91% of Illinois public high schools
- ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·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
15.8:1
69 FTE teachers
DISTRICT 16.4:1 · STATE 13.8:1
Free / Reduced Lunch
29%
321 students
DISTRICT 37% · 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 | 286 | 26% |
| Grade 10 | 265 | 24% |
| Grade 11 | 261 | 24% |
| Grade 12 | 278 | 26% |
Student demographics
63%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 68% · 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
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
60.0%
composite math + reading, all grades
Predicted
54.5%
based on IL schools with similar FRL share
Beats by
+5.5pp
above demographic expectation
What this means: About 60% of students here test proficient in math and reading, compared with the roughly 55% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Glenbard South High School
Glenbard South High School's state test result (60.0% proficient) is higher than 3 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Glenbard South High School this school | 1,090 | 29.4% | 60.0% |
| Normal Community High School Normal | 2,079 | 33.4% | 49.5% |
| Glenbard West High School Glen Ellyn | 2,330 | 28.7% | 61.2% |
| Oswego East High School Oswego | 2,758 | 24.2% | 51.4% |
| Wheaton North High School Wheaton | 1,863 | 29.4% | 62.0% |
| Plainfield North High School Plainfield | 2,399 | 20.8% | 56.8% |
Matched among Illinois high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Glenbard South High School ranks
Among high schools| Measure | This school | In Illinois | In DuPage County |
|---|---|---|---|
| State test proficiency ranked highest first | 60.0% | #32 of 573 | #10 of 17 |
| Enrollment ranked largest first | 1,090 | #205 of 708 | #21 of 24 |
| Students per teacher ranked fewest first | 15.8:1 | #392 of 528 | #18 of 23 |
| Diversity index ranked most diverse first | 63.3% | #77 of 537 | #11 of 23 |
| Free and reduced lunch ranked highest share first | 29.4% | #505 of 578 | #9 of 17 |
| Enrollment change since 2017-18 ranked steepest decline first | -5.9% | #239 of 358 | #11 of 20 |
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
1,090
-25 (-2%) vs 2020
+3% since 1990-91, when it was 1,057
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 | 1,090 | 69.2 | 15.8:1 | 29% (321) |
| 2023-24 | 1,027 | 66.8 | 15.4:1 | 29% (299) |
| 2022-23 | 1,075 | 70.9 | 15.2:1 | 28% (296) |
| 2020-21 | 1,115 | N/A | N/A | N/A |
| 2017-18 | 1,158 | 71.1 | 16.3:1 | 24% (277) |
| 2015-16 | 1,201 | 77 | 15.6:1 | 22% (262) |
| 2010-11 | 1,390 | 86 | 16.2:1 | 15% (204) |
| 2000-01 | 1,430 | 94 | 15.2:1 | N/A |
| 1990-91 | 1,057 | 74 | 14.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Glenbard South High School.
Since 2017-18: students down 6% (1,158 to 1,090); teachers down 3% (71.1 to 69.2).
About Glenbard South High School
Glenbard South High School is a mid-sized high school with its address in Glen Ellyn, Illinois. Its grade span covers grades 9 through 12, with 1,090 students on the rolls. That compares with an average of about 834 students for high schools in Illinois.
The 4 schools in Glenbard Twp HSD 87 enroll 7,810 students altogether, Glenbard South High School among them.
About 56% of the student body at Glenbard South High School is White. Other students are 18% Hispanic, 12% Asian, 10% Black, and 4% multiracial. By comparison, DuPage County residents are about 65% White. On a 0 to 100 scale, the school's diversity index is 63, compared with 70 nationally.
Its staff includes 69.2 full-time-equivalent teachers, for about 15.8 students per teacher. Compared with the 13.8:1 average for high schools in Illinois, this school's ratio is higher. Roughly 29% of students at Glenbard South High School can receive free or reduced-price lunch.
Glenbard South High School holds an A allk12 Grade, placing it above 91% of Illinois public high schools.
Given its share of students eligible for free or reduced-price lunch, Glenbard South High School would be expected to post about 54.5%. Its actual average proficiency rate across its state test results is 60.0%.
In the surrounding county, DuPage County, the median household earns about $112,096 a year, 52% of adults hold a bachelor's degree or higher, and about 5% of people live in poverty. DuPage County has 277 public schools with about 138,557 students, including Glenbard South High School.
Glenbard South High School's closest public school neighbor is Arbor View Elementary School, about 0.5 miles away. The five-mile area around Glenbard South High School holds at least 8 other public schools. Local comparison: Glenbard South High School ranks 7th of 9 nearby schools, at 60.0% versus a 63.3% average.
Glenbard South High School falls in the Suburb: Large locale category, used for schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
The school's size has been steady, with 1,115 students in 2020-21 and 1,090 in 2024-25.
Anyone can start a thread about athletics, class schedules, and weather closures at Glenbard South High School. Teachers and staff are welcome to share updates too.
DuPage County at a glance
View full county profilePopulation
930,024
Census ACS
Median income
$112,096
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
277
138,557 students
Quick facts
Related schools
Other schools in Glenbard Twp HSD 87
- Glenbard West High SchoolHigh · 2,330 students
- Glenbard East High SchoolHigh · 2,311 students
- Glenbard North High SchoolHigh · 2,079 students
Other schools in Glen Ellyn
- Glenbard West High SchoolHigh · 2,330 students
- Hadley Junior High SchoolMiddle · 1,143 students
- Glen Crest Middle SchoolMiddle · 723 students
- Churchill Elementary SchoolElementary · 618 students
- Benjamin Franklin Elementary SchoolElementary · 581 students
- Forest Glen Elementary SchoolElementary · 581 students
Nearby schools
- Arbor View Elementary School0.5 mi · 313
- Briar Glen Elementary School0.9 mi · 523
- Park View Elementary School1.3 mi · 390
- Butterfield Elementary School1.5 mi · 293
- Westfield Elementary School1.6 mi · 311
- Glen Crest Middle School1.6 mi · 723
Frequently asked questions
About Glenbard South High SchoolHow large is Glenbard South High School?
Glenbard South High School enrolls approximately 1,090 students in grades 09-12.
What grades does Glenbard South High School serve?
Glenbard South High School serves grades 09-12.
How many students per teacher at Glenbard South High School?
Approximately 15.8:1 students per teacher at Glenbard South High School.
What is the racial breakdown of students at Glenbard South High School?
At Glenbard South High School, the student body is approximately 56% White, 18% Hispanic, 10% Black, 12% Asian, 4% Two or more.
Who oversees Glenbard South High School?
Glenbard South High School is overseen by Glenbard Twp HSD 87 in DuPage County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.