Enrollment
1,847
Illinois · 2024-25 NCES data
High school (grades 9-12) · Addison, IL
Addison Trail High School
Federal NCES profile for Addison Trail High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 171394001737
👥 S:T ratio 38
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 47
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Addison Trail High School earns 43/100 on the Resource Investment Index, with class sizes larger than 74% of Illinois schools. It is also one of the largest schools in Illinois.
- #10 of 10
- public schools in Addison · Resource Index
- 43
- Resource Index · Typical
- 15.4:1
- large classes for Illinois
- 1,847
- students enrolled
Addison Trail High School has class sizes larger than 74% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Addison Trail High School ranks #10 of 10 public schools in Addison, IL.
School address
District: Dupage Hsd 88 · Illinois
NCES ID 171394001737 Verify on NCES CCD record →
Teachers (FTE)
120.0
Federal CCD staff survey
Students per teacher
15.4:1
vs 14:1 Illinois avg
+10% vs state
Student-teacher ratio in context
How Addison Trail High School compares with Illinois and U.S. medians
What stands out at Addison Trail High School
Addison Trail High School is a large high school in Addison, Illinois, enrolling 1,847 students.
Class loads run somewhat heavier than typical: 15.4:1 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 97% of state schools at 1,847 students.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by Hispanic or Latino (70%) and White (21%) (diversity index 46/100).
On the academic-pipeline side it reports 22 Advanced Placement courses.
Counselor coverage runs a bit thin, about 264 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 45.9% 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: 399 in- and out-of-school suspensions were reported for 1,847 students in the 2021-22 Civil Rights Data Collection.
Its district, Dupage Hsd 88, also runs Willowbrook High School (1,983 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 Addison Trail High School compares
Addison Trail 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 | 15.4:1 | ▲ 10% | 14:1 | 15.7:1 |
| Enrollment | 1,847 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.4:1
Leaner classes than 43% of US schools, a middle-of-the-pack class size.
1,847
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
15.4:1
students per teacher
- 10% above state mean
Top 74% in Illinois - lower ratio than 26% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
45.9%
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 264 students, the combined health-and-guidance staffing load for this school.
Discipline context
340
in-school suspensions + 59 out-of-school
Suspension rate: 18.4 per 100 students. Combined in-school and out-of-school rate: 21.6 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
Hispanic or Latino 70.4%
White 20.9%
Asian 4.2%
African American 2.6%
Two or More 1.4%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.2%
Largest group: Hispanic or Latino at 70.4% of enrollment.
Student-body diversity index 45.8/100
Simpson diversity index - at 45.8, Addison Trail 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 Addison Trail 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 Addison Trail High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Willowbrook High School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Addison Trail High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,983
- Students per teacher
- 16.7:1
- Resource Index
- 30/100
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 (~1,847 students)
Similar student-teacher ratio (~15.4:1)
Next steps
Verify locally before acting on Addison Trail High School's federal record.
- Compare Addison Trail 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 Addison Trail High School
How many students attend Addison Trail High School?
Addison Trail High School has 1,847 students enrolled. It is a high school in Addison, IL.
What is the student-teacher ratio at Addison Trail High School?
The student-teacher ratio at Addison Trail High School is 15.4:1, which is 10% higher than the Illinois average of 14:1 and 2% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Addison Trail High School?
The largest demographic group at Addison Trail High School is Hispanic or Latino at 70.4% of enrollment, in Addison, IL.
What is the Resource Investment Index for Addison Trail High School?
Addison Trail High School has a Resource Investment Index of 43/100 (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 Addison Trail High School rank among public schools in Addison?
By Resource Investment Index, Addison Trail High School ranks #10 of 10 public schools in Addison, 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 Addison on the city page.
Is Addison Trail High School a good school?
Addison Trail High School earns 43/100 on the Resource Investment Index, with class sizes larger than 74% 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 Addison Trail High School, Dupage Hsd 88 also operates Willowbrook High School (1,983 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.