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SCHOOL COMMUNITY·WILMINGTON CUSD 209U·NCES 174263004283

Wilmington Middle School

715 S Joliet St, Wilmington, IL 60481 · (815) 926-1687 · Will County
GRADES 06–08MIDDLE31-TOWNTITLE IREGULAR SCHOOL254 STUDENTS
Enrollment
254
Middle
DISTRICT 315 · STATE 462
Student : Teacher
12.3:1
21 FTE teachers
DISTRICT 14.7:1 · STATE 13.0:1
Free / Reduced Lunch
47%
119 students
DISTRICT 46% · 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 6
85
Grade 7
82
Grade 8
87
Student demographics
White
21886%
DISTRICT 83% · STATE 45%
Hispanic
229%
DISTRICT 12% · STATE 29%
Asian
52%
DISTRICT 1% · STATE 6%
Two+
94%
DISTRICT 3% · 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
13654%
Female
11846%

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Test scores

IAR + ISA 2024-25 . % Proficient (Levels 4-5)
English Language Arts
72.9%
IL avg 51.0% . +3.0pp since 2023
Math
37.8%
IL avg 37.9% . +4.0pp 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
54.8%
composite math + reading, all grades
Predicted
44.5%
based on IL schools with similar FRL share
Beats by
+10.3pp
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
254
-34 (-12%) vs 2017
Student : Teacher
12.3:1
was 13.7:1
% White
86%
was 93%
% Hispanic
9%
was 4%
% Black
0%
was 0%
% Asian
2%
was 0%
Source: NCES Common Core of Data

About Wilmington Middle School

Wilmington Middle School, a low-enrollment junior high in Wilmington, Illinois, overseen by Wilmington CUSD 209U, enrolls 254 students, covering grades 6 through 8. That puts it 45% below the typical public school in Illinois, which averages around 462 students.

Across the 4 schools in Wilmington CUSD 209U (1,261 students total), Wilmington Middle School accounts for its share of the district's footprint.

On demographics, Wilmington Middle School lists that nearly all students (86%) are White. The remainder consists of 9% Hispanic, 4% multiracial. That is noticeably more White than the county at large, where the share is closer to 62%.

In terms of school funding signals, On paper, Wilmington Middle School has 21 full-time-equivalent teachers, translating to a class-load average of around 12.3:1. The state averages around 13.0:1, so this campus is tighter than the state norm typical. An estimated 47% of students are eligible for free or reduced-price lunch, often used as a Title I proxy.

After controlling for student poverty, Wilmington Middle School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 44.5%, the actual is 54.8%, a residual of +10.3 points.

Across the wider county, community-level numbers for Will County indicate the typical household earns roughly $109,984 per year, 38% of adults hold a bachelor's degree or higher, and roughly 6% of residents live below the federal poverty line. In all, Will County runs 209 public schools (combined enrollment of about 113,008 students), of which Wilmington Middle School is one.

Nearest neighbor: L J Stevens Intermediate School, around 0.1 miles off. Counting just inside five miles, 5 other public schools cluster around Wilmington Middle School. On composite proficiency, Wilmington Middle School comes 3rd of 8 in the immediate cluster, higher than the nearby-schools average of 49.4%.

The school occupies a small-town site.

Over the past 7-year window. Looking back 7 years, enrollment at Wilmington Middle School has shrank 12%, going from 288 students in 2018 to 254 in 2025. The White share of enrollment decreased from 93% to 86% over that span. Class-load math has tightened: from 13.7:1 in 2018 to 12.3:1 in 2025.

On allk12, recent activity here tends to focus on classroom updates, athletics, and weather closures. Parents, students, alumni, and staff are welcome to weigh in.

Will County at a glance

View full county profile
Population
701,462
Census ACS
Median income
$109,984
Household, ACS
Bachelor's+
38%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
209
113,008 students

Quick facts

School name
Wilmington Middle School
District
Wilmington CUSD 209U
Address
715 S Joliet St, Wilmington, IL 60481
Phone
(815) 926-1687
County
Will County
Level
Middle
Grade range
06–08
Total enrollment
254
Teachers (FTE)
21
Student–teacher ratio
12.3:1
Free/Reduced lunch
119 (47%)
Locale
31-Town: Fringe
NCES ID
174263004283
Charter school
No
Virtual school
No

Related schools

Other schools in Wilmington CUSD 209U
Other schools in Wilmington
Nearby schools

Frequently asked questions

About Wilmington Middle School
What is the total enrollment at Wilmington Middle School?
Wilmington Middle School enrolls approximately 254 students in grades 06-08.
What age range does Wilmington Middle School serve?
Wilmington Middle School serves students from grade 06 through grade 08.
What is the student-teacher ratio at Wilmington Middle School?
The student-to-teacher ratio at Wilmington Middle School is approximately 12.3:1 (21 FTE teachers).
What is the student diversity at Wilmington Middle School?
Student demographics at Wilmington Middle School are roughly 86% White, 9% Hispanic, 2% Asian, 4% Two or more.
Who oversees Wilmington Middle School?
Wilmington Middle School is overseen by Wilmington CUSD 209U in Will County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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