Enrollment
1,090
Illinois · 2024-25 NCES data
2024-25 NCES data High school (grades 9-12) NCES 171683001990
Glenbard South High School — Glen Ellyn, IL
Federal NCES profile for Glenbard South High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — composite Resource Quality Score 51/100.
School address
District: Glenbard Twp Hsd 87 · Illinois
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
70.0
Federal CCD staff survey
Students per teacher
15.4:1
vs 14.6:1 Illinois avg
+5% vs state
Student-teacher ratio in context
How Glenbard South High School compares with Illinois and U.S. medians
What this school's NCES data tells you
Glenbard South High School reports 1,090 enrolled students to the National Center for Education Statistics (NCES) alongside 70.0 full-time-equivalent teachers, producing a 15.4:1 student-teacher ratio. That figure sits 5% above the Illinois state mean of 14.6:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 3% lower, a useful calibration for families comparing districts across state lines.
The school offers 20 Advanced Placement courses, a stronger academic pipeline indicator than enrollment alone. Counselor coverage works out to roughly 273 students per counselor, above the ASCA-recommended ceiling of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 23.5% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Glenbard Twp Hsd 87 spends $25,663 per pupil district-wide, above the Illinois average of $20,099 and above the national average of $19,490. Revenue comes 71.1% from local sources (property taxes), 25.0% from the state, and 3.8% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a composite Resource Quality Grade of C- (51/100), calculated from 5 distinct NCES and CRDC indicators.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Glenbard South High School compares
Cross-validating school-level NCES values against Illinois state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | Illinois avg | U.S. avg |
|---|---|---|---|
| Students per teacher | 15.4:1 | 14.6:1 | 15.9:1 |
| Enrollment (students) | 1,090 | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Overview
Enrollment 1,090
Teachers (FTE) 70.0
Students per teacher 15.4:1 +5% vs state
Free-lunch eligible —
NCES ID 171683001990
Student demographics
White 55.5%
Hispanic or Latino 18.3%
Asian 12.2%
African American 9.7%
Two or More 3.9%
Native Hawaiian / Pacific Islander 0.4%
American Indian / Alaska Native 0.1%
Largest group: White at 55.5% of enrollment.
Programs & staff
AP courses offered 20
Counselors (FTE) 4.0
Students per counselor 273:1
Discipline & special education
Chronically absent 23.5%
In-school suspensions 0
Out-of-school suspensions 11
Funding & spending
District-wide per-pupil expenditure for Glenbard Twp Hsd 87, which includes Glenbard South High School.
$25,663
Per student
+28%
vs Illinois
Avg $20,099
+32%
vs U.S.
Avg $19,490
Revenue mix
Local 71.1%
State 25.0%
Federal 3.8%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
Other Schools in This District
- Enrollment
- 2,330
- Students per teacher
- 17.7:1
- Enrollment
- 2,311
- Students per teacher
- 16.5:1
- Enrollment
- 2,079
- Students per teacher
- 15.6:1
Similar high schools in Glen Ellyn
1 comparable high schools (grades 9-12) serving the same city.
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Glenbard South High School
How many students attend Glenbard South High School?
Glenbard South High School has 1,090 students enrolled. It is a high school in Glen Ellyn, IL.
What is the student-teacher ratio at Glenbard South High School?
The student-teacher ratio at Glenbard South High School is 15.4:1, which is 5% higher than the Illinois average of 14.6:1 and 3% lower than the national average of 15.9:1.
What is the racial and ethnic makeup of Glenbard South High School?
The largest demographic group at Glenbard South High School is White at 55.5%. The school serves a diverse student body in Glen Ellyn, IL.
What is the quality grade for Glenbard South High School?
Glenbard South High School receives a Resource Quality Grade of C- (51/100) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. This grade reflects available federal resource indicators, not standardized test scores.
Related data sources
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