Enrollment
1,983
Illinois · 2024-25 NCES data
High school (grades 9-12) · Villa Park, IL
Willowbrook High School
Federal NCES profile for Willowbrook High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 44/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 171394001738
👥 S:T ratio 33
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 43
📋 Attendance 12
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Willowbrook High School earns 44/100 on the Resource Investment Index, with class sizes larger than 85% of Illinois schools. It is also one of the largest schools in Illinois.
- #6 of 7
- public schools in Villa Park · Resource Index
- 44
- Resource Index · Typical
- 16.7:1
- large classes for Illinois
- 1,983
- students enrolled
Willowbrook High School has class sizes larger than 85% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Willowbrook High School ranks #6 of 7 public schools in Villa Park, IL.
School address
District: Dupage Hsd 88 · Illinois
NCES ID 171394001738 Verify on NCES CCD record →
Teachers (FTE)
119.0
Federal CCD staff survey
Students per teacher
16.7:1
vs 14:1 Illinois avg
+19% vs state
Student-teacher ratio in context
How Willowbrook High School compares with Illinois and U.S. medians
What stands out at Willowbrook High School
Willowbrook High School is a large high school in Villa Park, Illinois, enrolling 1,983 students.
Class loads run somewhat heavier than typical: 16.7:1 puts it in the larger third of Illinois schools by student-teacher ratio.
By headcount it is one of the larger campuses in Illinois, bigger than 98% of state schools at 1,983 students.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by White (41%) and Hispanic or Latino (38%), more mixed than most schools in the state (diversity index 67/100).
On the academic-pipeline side it reports 22 Advanced Placement courses.
Counselor coverage runs a bit thin, about 283 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 35.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Dupage Hsd 88 spends $21,937 per pupil, 29% above the Illinois average, a better-resourced district than most.
Discipline events run high: 555 in- and out-of-school suspensions were reported for 1,983 students in the 2021-22 Civil Rights Data Collection.
Its district, Dupage Hsd 88, also runs Addison Trail High School (1,847 students).
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Willowbrook High School compares
Willowbrook High School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.7:1 | ▲ 19% | 14:1 | 15.7:1 |
| Enrollment | 1,983 | top 2% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.7:1
Leaner classes than 33% of US schools, heavier class loads than most.
1,983
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
16.7:1
students per teacher
- 19% above state mean
Top 85% in Illinois - lower ratio than 15% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
35.4%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$21,937
per pupil, district-wide
- above Illinois avg of $17,042
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors7.0 FTE
Per 283 students, the combined health-and-guidance staffing load for this school.
Discipline context
393
in-school suspensions + 162 out-of-school
Suspension rate: 19.8 per 100 students. Combined in-school and out-of-school rate: 28.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 40.5%
Hispanic or Latino 38.4%
African American 8.6%
Asian 8.3%
Two or More 4.0%
American Indian / Alaska Native 0.1%
Largest group: White at 40.5% of enrollment.
Student-body diversity index 67.3/100
Simpson diversity index - at 67.3, Willowbrook High School is more mixed than the Illinois school average of 38.9.
Programs
AP courses offered 22
Funding & spending
District-wide per-pupil expenditure for Dupage Hsd 88, which includes Willowbrook High School.
$21,937
Per student
+29%
vs Illinois
Avg $17,042
+32%
vs U.S.
Avg $16,593
Revenue mix
Local 70.4%
State 24.2%
Federal 5.5%
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.
How Willowbrook High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Addison Trail High School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Willowbrook High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,847
- Students per teacher
- 15.4:1
- Resource Index
- 29/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,983 students)
Next steps
Verify locally before acting on Willowbrook High School's federal record.
- Compare Willowbrook High School against another school. Compare schools
- Dupage Hsd 88's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Willowbrook High School
How many students attend Willowbrook High School?
Willowbrook High School has 1,983 students enrolled. It is a high school in Villa Park, IL.
What is the student-teacher ratio at Willowbrook High School?
The student-teacher ratio at Willowbrook High School is 16.7:1, which is 19% higher than the Illinois average of 14:1 and 6% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Willowbrook High School?
The largest demographic group at Willowbrook High School is White at 40.5% of enrollment, in Villa Park, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 67.3/100.
What is the Resource Investment Index for Willowbrook High School?
Willowbrook High School has a Resource Investment Index of 44/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Willowbrook High School rank among public schools in Villa Park?
By Resource Investment Index, Willowbrook High School ranks #6 of 7 public schools in Villa Park, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Villa Park on the city page.
Is Willowbrook High School a good school?
Willowbrook High School earns 44/100 on the Resource Investment Index, with class sizes larger than 85% of Illinois schools. It is also one of the largest schools in Illinois. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Dupage Hsd 88?
Besides Willowbrook High School, Dupage Hsd 88 also operates Addison Trail High School (1,847 students). See the Dupage Hsd 88 district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.