Enrollment
254
Middle
DISTRICT 315 · STATE 462
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
A-
allk12 Grade
Scored higher than 76% of Illinois public middle schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- A-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Illinois public middle schools
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, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 6 | 85 | 33% |
| Grade 7 | 82 | 32% |
| Grade 8 | 87 | 34% |
Student demographics
25%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 29% · STATE 69% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Students here typically continue to
Wilmington Middle School→Wilmington High School
Feeds from
Based on grade levels within Wilmington CUSD 209U. Attendance zones can vary; confirm enrollment with the district.
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
What this means: On the IAR + ISA, Illinois's statewide test, about 73 of every 100 students at this school read and write at grade level and about 38 of 100 do math at grade level. Across all Illinois schools, those numbers are about 51 and 38. Reading and writing scores are up about 3 points since 2023, while math scores are up about 4 points.
IAR + ISA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 72.9% | 37.8% |
| 2023-24 | 69.9% | 33.8% |
% Proficient (Levels 4-5), all students and all tested grades.
Source: IAR + ISA. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
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
What this means: About 55% of students here test proficient in math and reading, compared with the roughly 44% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Wilmington Middle School
Wilmington Middle School's state test result (54.8% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Wilmington Middle School this school | 254 | 46.9% | 54.8% |
| Anna Junior High School Anna | 236 | 49.2% | 44.7% |
| Amboy Jr High School Amboy | 210 | 47.1% | 40.0% |
| River Bend Middle School Fulton | 228 | 46.5% | 47.5% |
| Sullivan Middle School Sullivan | 266 | 47.4% | 45.0% |
| Bismarck-Henning Jr High School Bismarck | 246 | 44.3% | 40.4% |
Matched among Illinois middle schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Wilmington Middle School ranks
Among middle schools| Measure | This school | In Illinois | In Will County |
|---|---|---|---|
| State test proficiency ranked highest first | 54.8% | #141 of 578 | #20 of 39 |
| Math proficiency ranked highest first | 37.8% | #255 of 640 ▼ 56 | #27 of 44 ▼ 2 |
| Reading proficiency ranked highest first | 72.9% | #148 of 640 ▼ 45 | #15 of 44 ▼ 4 |
| Enrollment ranked largest first | 254 | #498 of 691 | #43 of 44 |
| Students per teacher ranked fewest first | 12.3:1 | #209 of 558 | #13 of 44 |
| Diversity index ranked most diverse first | 25.4% | #436 of 560 | #43 of 44 |
| Free and reduced lunch ranked highest share first | 46.9% | #322 of 581 | #13 of 39 |
| Enrollment change since 2017-18 ranked steepest decline first | -11.8% | #222 of 440 | #21 of 36 |
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
254
-35 (-12%) vs 2020
-22% since 1990-91, when it was 325
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 254 | 20.7 | 12.3:1 | 47% (119) |
| 2023-24 | 272 | 20.5 | 13.3:1 | 43% (118) |
| 2022-23 | 295 | 21.2 | 13.9:1 | 43% (126) |
| 2020-21 | 289 | N/A | N/A | N/A |
| 2017-18 | 288 | 21 | 13.7:1 | 42% (120) |
| 2015-16 | 295 | 18 | 16.4:1 | 44% (131) |
| 2010-11 | 326 | 20 | 16.3:1 | 29% (95) |
| 2000-01 | 354 | 20 | 17.7:1 | N/A |
| 1990-91 | 325 | 20 | 16.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Wilmington Middle School.
Since 2017-18: students down 12% (288 to 254); teachers down 1% (21 to 20.7).
About Wilmington Middle School
Wilmington Middle School is a low-enrollment middle school with an address in Wilmington, Illinois. The school had 254 students in grades 6 through 8 in 2024-25. An average school in this group (middle schools in Illinois) has about 462 students.
Wilmington Middle School is in Wilmington CUSD 209U, a district with 1,261 students across 4 schools.
Federal enrollment data show Wilmington Middle School is 86% White. Other groups make up 9% Hispanic and 4% multiracial. Will County as a whole is about 62% White, so the school's share is higher. Pick two students at random and there is a 25% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
With 20.7 full-time-equivalent teachers in 2024-25, the ratio at Wilmington Middle School was 12.3:1. This ratio sits 0.7 below the 13.0:1 average for middle schools in Illinois. A measure often used for student poverty, free or reduced-price lunch eligibility, stands at 47%. For comparison, public schools in Will County average 44%.
The allk12 Grade for Wilmington Middle School is A-. Compared with Illinois public middle schools, the school scored higher than 76% on a mix of test scores, poverty-adjusted results, and recent trend.
When test results are adjusted for free or reduced-price lunch eligibility, Wilmington Middle School is 10.3 points above its prediction. Actual: 54.8%. Predicted: 44.5%.
Census Bureau estimates for Will County show that the median household income is $109,984, roughly 38% of adults have a four-year degree or more, and the share of residents below the poverty line is 6%. There are 209 public schools in Will County, enrolling about 113,008 students in all.
Nearby, L J Stevens Intermediate School is about 0.1 miles away. Within five miles of Wilmington Middle School, there are 5 other public schools. On average proficiency, Wilmington Middle School is 3rd of 8 nearby schools with test data.
In the federal locale system, Wilmington Middle School is coded Town: Fringe, for schools in a town close to an urbanized area.
Compared with 2020-21, the school had 35 fewer students in 2024-25.
Families, students, and staff can use this page to discuss school safety, transportation, and start times at Wilmington Middle School. Alumni can share how the school prepared them.
Will County at a glance
View full county profilePopulation
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
Related schools
Other schools in Wilmington CUSD 209U
- Wilmington High SchoolHigh · 432 students
- L J Stevens Intermediate SchoolElementary · 353 students
- Bruning Elementary SchoolElementary · 222 students
Other schools in Wilmington
- Wilmington High SchoolHigh · 432 students
- L J Stevens Intermediate SchoolElementary · 353 students
- Bruning Elementary SchoolElementary · 222 students
- SOWIC Education CenterElementary
- SOWIC-EC WilmingtonElementary
- SOWIC-Educ & Life Skills-WilmingtElementary
Other Wilmington Middle schools
One other US public school is named Wilmington Middle. Wilmington Middle School is the 2nd largest of the 2.
- Wilmington Middle SchoolWilmington, MA · 782 students
Nearby schools
- L J Stevens Intermediate School0.1 mi · 353
- Wilmington High School0.4 mi · 432
- Bruning Elementary School1.4 mi · 222
- Reed-Custer High School4.6 mi · 397
- Reed-Custer Middle School4.7 mi · 306
- Reed-Custer Elementary School5.1 mi · 690
Frequently asked questions
About Wilmington Middle SchoolWhat 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.