- Enrollment
- 447
- Students per teacher
- 14:1
- Resource Index
- 32/100
Elementary school (grades K-5) · South Beloit, IL
Willowbrook Middle School
Federal NCES profile for Willowbrook Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
2024-25 NCES dataElementary school (grades K-5)NCES 173255006063
👥 S:T ratio 42
🌟 Gifted program 30
📋 Attendance 46
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Willowbrook Middle School earns 39/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #2 of 3
- elementary schools in South Beloit · Resource Index
- 39
- Resource Index · Typical
- 14.5:1
- students per teacher
- 348
- students enrolled
Willowbrook Middle School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Willowbrook Middle School ranks #2 of 3 elementary schools in South Beloit, IL.
School address
District: Prairie Hill Ccsd 133 · Illinois
NCES ID 173255006063 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+24 students YoY
Willowbrook Middle School grew from 296 students in 2022-23 to 320 in 2023-24 (+8.1%).
Teacher FTE lost 24.4 → 22.3 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+24 students YoY 173255006063 · South Beloit, IL Elementary · SMALL · TRAD
348 enr · 14.5:1 · RII 39
Nearest enrollment peer: Prairie Hill Elem School (447 students)
Willowbrook Middle School grew from 296 students in 2022-23 to 320 in 2023-24 (+8.1%). Teacher FTE lost 24.4 → 22.3 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
How Willowbrook Middle School compares
Willowbrook Middle School is a growing campus on CCD: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.5:1 | ▲ 4% | 14:1 | 15.7:1 |
| Enrollment | 348 | top 54% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.5:1
Leaner classes than 52% of US schools, a middle-of-the-pack class size.
348
Bigger than 39% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
14.5:1
students per teacher
- 4% above state mean
Top 63% in Illinois - lower ratio than 37% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
21.6%
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
$13,252
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
25
in-school suspensions + 7 out-of-school
Suspension rate: 7.2 per 100 students. Combined in-school and out-of-school rate: 9.2 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 79.6%
Hispanic or Latino 8.9%
Two or More 5.2%
African American 3.2%
Asian 3.2%
Largest group: White at 79.6% of enrollment.
Student-body diversity index 35.4/100
Simpson diversity index - at 35.4, Willowbrook Middle School is less mixed than the Illinois school average of 38.9.
Programs
District finance for Prairie Hill Ccsd 133 reports $13,252 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Willowbrook Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Prairie Hill Elem School | Larger | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Willowbrook Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
Similar elementary schools in South Beloit
2 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary 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 (~348 students)
Similar student-teacher ratio (~14.5:1)
Frequently asked questions about Willowbrook Middle School
How many students attend Willowbrook Middle School?
Willowbrook Middle School has 348 students enrolled. It is an elementary school in South Beloit, IL. CCD year-over-year: 296 (2022-23) → 320 (2023-24), up 24.
What is the student-teacher ratio at Willowbrook Middle School?
The student-teacher ratio at Willowbrook Middle School is 14.5:1, which is 4% higher than the Illinois average of 14:1 and 8% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Willowbrook Middle School?
The largest demographic group at Willowbrook Middle School is White at 79.6% of enrollment, in South Beloit, IL.
What is the Resource Investment Index for Willowbrook Middle School?
Willowbrook Middle School has a Resource Investment Index of 39/100 (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 Willowbrook Middle School rank among elementary schools in South Beloit?
By Resource Investment Index, Willowbrook Middle School ranks #2 of 3 elementary schools in South Beloit, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in South Beloit on the city page.
What other schools are in Prairie Hill Ccsd 133?
Besides Willowbrook Middle School, Prairie Hill Ccsd 133 also operates Prairie Hill Elem School (447 students). See the Prairie Hill Ccsd 133 district page for the complete list.