Glenbard South High School
Glen Ellyn · IL · Glenbard Twp HSD 87 · Public
Similar nearby schools
Most similar nearby schools
Hinsdale South High School → Lemont Twp High School → Elmwood Park High School → Wheaton Warrenville South H S → Fenton High School → Wheaton North High School → Proviso Math and Science Academy → Comm H S Dist 99 - North H S →At a glance
- 17 AP courses offered — Elite
- Dual-enrollment program (college credit while in HS)
- 5 calculus classes · 11 physics · 16 chemistry
- AP rigor: 90th percentile nationally
- SAT/ACT participation: 80th percentile by test-taker volume
Composed from federal CRDC offerings, and other public data. Full breakdowns below.
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How Glenbard South High School compares for families
Standout academic depth by national standards.
- ▸ StatewideAP rigor in the top 10% nationally with 17 AP courses.
- ▸ LocallyIL sits right at the US average on NAEP 8th-grade math — local school quality will set your kid apart.
- ▸ vs Similar SchoolsThe closest comparables nearby: Hinsdale South High School, Lemont Twp High School, Elmwood Park High School and 5 more. See the sidebar to compare side-by-side.
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Objective, government-grade data — no school pays us for placement.
Academic rigor
AP + advanced-course offerings
Elite — exceptional AP + advanced course breadth
90th percentile nationally
Source: federal Civil Rights Data Collection (CRDC 2020-21). CRDC reports what's offered + enrolled — it doesn't collect AP exam pass rates (College Board owns that data and doesn't release it school-level).
SAT / ACT participation
CRDC federal data · 2020-2180th percentile by test-taker volume
Source: federal Civil Rights Data Collection (CRDC 2020-21). Volume — not score — is what's reported here. A higher count means more students at this school are entering the college admissions pipeline. Note: 2020-21 was COVID-disrupted; some districts (especially those that stayed remote longer) report unusually low or zero takers.
Teacher workforce · federal CRDC
Teacher experience & reliability
Source: federal Civil Rights Data Collection (CRDC 2017-18 — the most recent vintage that publishes per-school teacher quality fields; the 2020-21 sweep had them suppressed). "Inexperienced" = teachers in their first or second year. "Chronic absence" = teachers absent 10+ days/year.
Federal Title I context
Mixed-income school
Below Title I eligibility threshold (FRPL < 35%)
25-34% of students qualify for free/reduced lunch. Below the federal Title I threshold but a meaningful share of the population is income-eligible for free lunch.
Source: NCES Common Core of Data, free/reduced-price lunch eligibility. The actual Title I designation is a district decision and may differ from eligibility — but the federal eligibility math is what we show here. We don't claim to assert whether the district formally chose to enroll this school in Title I.
Your state's public flagship
University of Illinois Urbana-Champaign
The in-state tuition gap is the flagship's biggest draw — most in-state families pay far less than the out-of-state sticker. Average net price after aid runs about $14,355/yr. Admission odds depend on your student's GPA and test scores, not which high school they attend.
Source: IPEDS admissions, tuition & enrollment + College Scorecard net price. Flagship = the state's primary public research university.
Counselor capacity
Source: U.S. Department of Education, Civil Rights Data Collection 2020-2021. Counselor ratio = the school's most recent total enrollment ÷ counselor FTE. The American School Counselor Association (ASCA) recommends a 250:1 maximum; the US national median across schools with on-staff counselors is roughly 430:1.
Enrollment trend & projection
Total enrollment + grade 12, NCES Common Core of Data (2021–2024).
If the recent trend holds…
At its recent rate of -0.5%/year, projecting from 2024's 1,090 students:
≈ 29 fewer students by 2029 — a real revenue/relevance risk worth getting ahead of.
An extrapolation of the recent trajectory, not a forecast of the school's plans; ignores one-off shocks.
Revenue at risk
At $24,884 per student in district revenue, the 29 students projected to be lost by 2029 represent ≈ $721,636/year in funding at risk.
District total revenue ÷ enrollment, NCES F-33. Public funding largely follows enrollment, so a shrinking class is a recurring budget hit.
Most similar nearby high schools
The schools most like this one — same type, blended on distance and size — and where their enrollment is heading. These are the schools families here weigh against each other.
| School | Type | Miles | HS enrollment | Trend |
|---|---|---|---|---|
| Hinsdale South High School Darien |
Public | 8.1 | 1,370 | +1.5% |
| Lemont Twp High School Lemont |
Public | 11.6 | 1,284 | -6.3% |
| Elmwood Park High School Elmwood Park |
Public | 13.9 | 1,015 | +2.3% |
| Wheaton Warrenville South H S Wheaton |
Public | 4.0 | 1,864 | -0.1% |
| Fenton High School Bensenville |
Public | 10.5 | 1,396 | -3.3% |
| Wheaton North High School Wheaton |
Public | 4.3 | 1,863 | -4.8% |
| Proviso Math and Science Academy Forest Park |
Public | 12.5 | 925 | +6.7% |
| Comm H S Dist 99 - North H S Downers Grove |
Public | 3.5 | 2,082 | -3.5% |
At a glance
JSON · Using this page with an AI assistantGlenbard South High School is a public high school in Glen Ellyn, IL, enrolling 1,090 students in grades 9-12 in 2024.
Enrollment is down 4% from 2021 to 2024.
It offers 17 AP courses, a course-rigor profile stronger than 90% of U.S. high schools, and has a dual-enrollment program (federal Civil Rights Data Collection).
240 students took the SAT or ACT in the most recent federal count, a participation level above 80% of U.S. high schools.
It has about 272 students per school counselor.
Sources: National Center for Education Statistics (enrollment), the federal Civil Rights Data Collection and EDFacts, state education agencies where named, and the school's own published documents where named.
Questions families ask
How many AP courses does Glenbard South High School offer? Glenbard South High School offers 17 AP courses, a course-rigor profile stronger than 90% of U.S. high schools, and has a dual-enrollment program (federal Civil Rights Data Collection).
How many students attend Glenbard South High School? Glenbard South High School is a public high school in Glen Ellyn, IL, enrolling 1,090 students in grades 9-12 in 2024.
Analysis: Test Prep Gurus (High School Reach, highschoolreach.com). These figures may be quoted with attribution to Test Prep Gurus.
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Related reading
AP courses · October 2026
Test scores · October 2026