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SCHOOL COMMUNITY·PRAIRIE HILL CCSD 133·NCES 173255006063

Willowbrook Middle School

6605 Prairie Hill Rd, South Beloit, IL 61080 · (815) 389-3957 · Winnebago County
GRADES 05–08MIDDLE41-RURALREGULAR SCHOOL348 STUDENTS
Enrollment
348
Middle
DISTRICT 398 · STATE 462
Student : Teacher
13.9:1
25 FTE teachers
DISTRICT 13.9:1 · STATE 13.0:1
Free / Reduced Lunch
16%
55 students
DISTRICT 13% · STATE 56%
Community
0
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 5
78
Grade 6
98
Grade 7
81
Grade 8
91
Student demographics
White
27780%
DISTRICT 81% · STATE 45%
Hispanic
319%
DISTRICT 10% · STATE 29%
Black
113%
DISTRICT 2% · STATE 16%
Asian
113%
DISTRICT 2% · STATE 6%
Two+
185%
DISTRICT 5% · STATE 5%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
17651%
Female
17249%

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Test scores

IAR + ISA 2024-25 . % Proficient (Levels 4-5)
English Language Arts
86.8%
IL avg 51.0% . +11.2pp since 2023
Math
55.0%
IL avg 37.9% . +3.4pp since 2023
Source: IAR + ISA. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
68.1%
composite math + reading, all grades
Predicted
62.4%
based on IL schools with similar FRL share
Beats by
+5.7pp
above demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
348
+22 (+7%) vs 2017
Student : Teacher
13.9:1
was 14.9:1
% White
80%
was 87%
% Hispanic
9%
was 5%
% Black
3%
was 2%
% Asian
3%
was 3%
Source: NCES Common Core of Data

About Willowbrook Middle School

Willowbrook Middle School is an intermediate school of cozy scale in South Beloit, Illinois, operated by Prairie Hill CCSD 133, teacheing 348 students in grades 5 through 8. By comparison, Illinois's public schools average about 462 students each, so Willowbrook Middle School sits 25% below that benchmark.

Willowbrook Middle School is one of 2 schools operated by Prairie Hill CCSD 133, a district that teaches 795 students overall.

On the student-mix side, Willowbrook Middle School reports that 80% of the student body identifies as White. Beyond that, the school logs 9% Hispanic, 5% multiracial, 3% Black, 3% Asian. The wider county runs roughly 66% White, putting the school's mix noticeably more White than the area baseline.

On the income-and-resources front, Willowbrook Middle School reports 25 full-time-equivalent teachers, putting the student-to-teacher ratio at about 13.9:1. The state averages around 13.0:1, so this campus is higher than the state norm typical. An estimated 16% of students are eligible for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is lower than Winnebago County's rate of about 61%.

Adjusting for the school's free-and-reduced-lunch share, Willowbrook Middle School tracks the demographic baseline. The model predicts 62.4% given the school's FRL share; actual proficiency is 68.1%.

Around the school, census data for Winnebago County shows median household earnings sit near $65,837, 25% of adults hold a bachelor's degree or higher, and roughly 11% of residents live below the federal poverty line. In all, Winnebago County runs 94 public schools (combined enrollment of about 44,103 students), of which Willowbrook Middle School is one.

Nearest neighbor: Prairie Hill Elem School, around 0.9 miles off. Within five miles, there are 8 other public schools. On composite proficiency, Willowbrook Middle School comes 2nd of 7 in the immediate cluster, higher than the nearby-schools average of 46.3%.

The school occupies a low-density site.

Five-year trend. Looking back 7 years, enrollment at Willowbrook Middle School has grew 7%, going from 326 students in 2018 to 348 in 2025. Over the same period, the White share declined from 87% to 80%. The student-to-teacher ratio fell from 14.9:1 in 2018 to 13.9:1 today.

In the discussion threads here, recent activity here tends to focus on classroom updates, athletics, and weather closures. Members of the school community can share what they know.

Winnebago County at a glance

View full county profile
Population
283,292
Census ACS
Median income
$65,837
Household, ACS
Bachelor's+
25%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
94
44,103 students

Quick facts

School name
Willowbrook Middle School
District
Prairie Hill CCSD 133
Address
6605 Prairie Hill Rd, South Beloit, IL 61080
Phone
(815) 389-3957
County
Winnebago County
Level
Middle
Grade range
05–08
Total enrollment
348
Teachers (FTE)
25
Student–teacher ratio
13.9:1
Free/Reduced lunch
55 (16%)
Locale
41-Rural: Fringe
NCES ID
173255006063
Charter school
No
Virtual school
No

Related schools

Other schools in Prairie Hill CCSD 133
Other schools in South Beloit
Nearby schools

Frequently asked questions

About Willowbrook Middle School
How large is Willowbrook Middle School?
Willowbrook Middle School enrolls approximately 348 students in grades 05-08.
What grades does Willowbrook Middle School serve?
Willowbrook Middle School serves grades 05-08.
What is the student-teacher ratio at Willowbrook Middle School?
The student-to-teacher ratio at Willowbrook Middle School is approximately 13.9:1 (25 FTE teachers).
What is the racial breakdown of students at Willowbrook Middle School?
At Willowbrook Middle School, the student body is approximately 80% White, 9% Hispanic, 3% Black, 3% Asian, 5% Two or more.
Who oversees Willowbrook Middle School?
Willowbrook Middle School is overseen by Prairie Hill CCSD 133 in Winnebago County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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