- Enrollment
- 353
- Students per teacher
- 15.3:1
- Resource Index
- 46/100
High school (grades 9-12) · Wilmington, IL
Wilmington High School
Federal NCES profile for Wilmington 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 174263004284
👥 S:T ratio 40
🌟 Gifted program 30
📋 Attendance 57
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Wilmington High School earns 43/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #3 of 4
- public schools in Wilmington · Resource Index
- 43
- Resource Index · Typical
- 14.9:1
- students per teacher
- 432
- students enrolled
Wilmington High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Wilmington High School ranks #3 of 4 public schools in Wilmington, IL.
School address
District: Wilmington Cusd 209u · Illinois
NCES ID 174263004284 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+0 students YoY
Wilmington High School held near 432 students from 2022-23 to 2023-24 (+0 headcount).
Teacher FTE added 29.0 → 30.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+0 students YoY 174263004284 · Wilmington, IL High · SMALL · TRAD
432 enr · 14.9:1 · RII 43
Nearest enrollment peer: L J Stevens Intermediate School (353 students)
Wilmington High School held near 432 students from 2022-23 to 2023-24 (+0 headcount). Teacher FTE added 29.0 → 30.0 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Wilmington High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Wilmington High School
432 students
- L J Stevens In
L J Stevens Intermediate School
353 students
- Wilmington Mid
Wilmington Middle School
254 students
- Bruning Elem S
Bruning Elem School
222 students
What this shows Wilmington High School reports 432 students on the CCD universe file.
How Wilmington High School compares
Wilmington High School held steady on CCD headcount: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.9:1 | ▲ 6% | 14:1 | 15.7:1 |
| Enrollment | 432 | top 40% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.9:1
Leaner classes than 48% of US schools, a middle-of-the-pack class size.
432
Bigger than 52% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
14.9:1
students per teacher
- 6% above state mean
Top 68% in Illinois - lower ratio than 32% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
17.1%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$13,098
per pupil, district-wide
- below Illinois avg of $18,196
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
3
in-school suspensions + 32 out-of-school
Suspension rate: 0.7 per 100 students. Combined in-school and out-of-school rate: 8.1 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 80.6%
Hispanic or Latino 15.5%
Two or More 2.5%
African American 0.9%
Asian 0.5%
Largest group: White at 80.6% of enrollment.
Student-body diversity index 32.6/100
Simpson diversity index - at 32.6, Wilmington High School is less mixed than the Illinois school average of 38.9.
Programs
AP courses offered 3
District finance for Wilmington Cusd 209u reports $13,098 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Wilmington High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| L J Stevens Intermediate School | Similar size | No free-lunch data | Similar S:T ratio |
| Wilmington Middle School | Smaller | No free-lunch data | Lower S:T ratio |
| Bruning Elem School | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Wilmington High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 254
- Students per teacher
- 12.1:1
- Resource Index
- 45/100
- Enrollment
- 222
- Students per teacher
- 17.1:1
- Resource Index
- 40/100
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~432 students)
Similar student-teacher ratio (~14.9:1)
Frequently asked questions about Wilmington High School
How many students attend Wilmington High School?
Wilmington High School has 432 students enrolled. It is a high school in Wilmington, IL. CCD year-over-year: 432 (2022-23) → 432 (2023-24), nearly flat (+0).
What is the student-teacher ratio at Wilmington High School?
The student-teacher ratio at Wilmington High School is 14.9:1, which is 6% higher than the Illinois average of 14:1 and 5% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Wilmington High School?
The largest demographic group at Wilmington High School is White at 80.6% of enrollment, in Wilmington, IL.
What is the Resource Investment Index for Wilmington High School?
Wilmington High School has a Resource Investment Index of 43/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Wilmington High School rank among public schools in Wilmington?
By Resource Investment Index, Wilmington High School ranks #3 of 4 public schools in Wilmington, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Wilmington Cusd 209u?
Besides Wilmington High School, Wilmington Cusd 209u also operates L J Stevens Intermediate School (353 students), Wilmington Middle School (254 students), and Bruning Elem School (222 students). See the Wilmington Cusd 209u district page for the complete list.