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SCHOOL COMMUNITY·WILMINGTON CUSD 209U·NCES 174263004284

Wilmington High School

209 Wildcat Ct, Wilmington, IL 60481 · (815) 926-1752 · Will County
GRADES 09–12HIGH41-RURALTITLE IREGULAR SCHOOL432 STUDENTS
B
allk12 Grade
Scored higher than 63% of Illinois public high schools
  • BTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • BBeats 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 high schools

Enrollment
432
High
DISTRICT 315 · STATE 834
Student : Teacher
14.6:1
30 FTE teachers
DISTRICT 14.7:1 · STATE 13.8:1
Free / Reduced Lunch
44%
189 students
DISTRICT 46% · STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 910424%
Grade 1011326%
Grade 1110725%
Grade 1210825%
Student demographics
33%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 29% · STATE 69% · US 70%
White
34881%
DISTRICT 83% · STATE 45% · US 43%
Hispanic
6716%
DISTRICT 12% · STATE 29% · US 30%
Black
41%
DISTRICT 1% · STATE 16% · US 15%
Asian
20%
DISTRICT 1% · STATE 6% · US 6%
Two+
113%
DISTRICT 3% · STATE 5% · US 5%
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
Male
23554%
Female
19746%

School pathway

Feeds from
Wilmington Middle School06–08
Based on grade levels within Wilmington CUSD 209U. Attendance zones can vary; confirm enrollment with the district.

Discussions

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BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
40.7%
composite math + reading, all grades
Predicted
46.3%
based on IL schools with similar FRL share
Beats by
-5.6pp
below demographic expectation

What this means: About 41% of students here test proficient in math and reading, compared with the roughly 46% 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 High School

Wilmington High School's state test result (40.7% proficient) is higher than 3 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Wilmington High School this school43243.8%40.7%
Reed-Custer High School
Braidwood
39741.8%33.1%
Paxton-Buckley-Loda High School
Paxton
37844.4%47.8%
Prairie Central High School
Fairbury
48740.0%36.3%
Forreston Jr/Sr High School
Forreston
40640.9%47.3%
Roxana Sr High School
Roxana
50044.2%37.2%
Matched among Illinois high 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 High School ranks

Among high schools
MeasureThis schoolIn IllinoisIn Will County
State test proficiency
ranked highest first
40.7%#184 of 573#7 of 13
Enrollment
ranked largest first
432#354 of 708#14 of 17
Students per teacher
ranked fewest first
14.6:1#287 of 528#6 of 17
Diversity index
ranked most diverse first
32.6%#290 of 537#14 of 17
Free and reduced lunch
ranked highest share first
43.8%#364 of 578#6 of 13
Enrollment change since 2017-18
ranked steepest decline first
-7.1%#220 of 358#8 of 12
Ranked against other public high 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 2024-25
Enrollment
432
-16 (-4%) vs 2020
-5% since 1990-91, when it was 454
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2543229.514.6:144% (189)
2023-244323014.4:142% (182)
2022-234322914.9:140% (172)
2020-21448N/AN/AN/A
2017-184653413.7:137% (170)
2015-164872618.7:134% (165)
2010-114642816.6:128% (132)
2000-014943215.4:1N/A
1990-914542418.9:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Wilmington High School.

Since 2017-18: students down 7% (465 to 432); teachers down 13% (34 to 29.5).

About Wilmington High School

Wilmington High School sits in Wilmington, Illinois, and is classified as a high school. Students in grades 9 through 12 attend the school, which enrolls 432 students. For comparison, high schools in Illinois average about 834 students.

Wilmington CUSD 209U is responsible for 4 schools, Wilmington High School included, with 1,261 students in all.

Most students at Wilmington High School are White: 81% of enrollment. Other students are 16% Hispanic and 3% multiracial. That is higher than the 62% White share among all Will County residents. By the diversity index, Wilmington High School comes in at 33%.

Staffing totals 29.5 full-time-equivalent teachers, and the student-to-teacher ratio is 14.6:1. That ratio is over the 13.8:1 average for high schools in Illinois. The free or reduced-price lunch rate at Wilmington High School is 44%. That is close to the 44% average for public schools in Will County.

The allk12 Grade for Wilmington High School is B. Compared with Illinois public high schools, the school scored higher than 63% on a mix of test scores, poverty-adjusted results, and recent trend.

Wilmington High School's average proficiency rate on state tests of 40.7% is 5.6 points below the 46.3% the model predicts from its lunch-eligibility share.

According to the American Community Survey, in Will County, median household income is about $109,984, 38% of adults hold a bachelor's degree or higher, and about 6% of residents live below the federal poverty line. A total of 209 public schools operate in Will County, serving about 113,008 students.

The nearest other public school, Wilmington Middle School, is about 0.4 miles away. In all, 4 other public schools sit within five miles of Wilmington High School. Among the 8 closest schools with test data, this one included, Wilmington High School ranks 7th on average proficiency.

The NCES locale for Wilmington High School is Rural: Fringe, which covers schools in rural territory close to an urban area.

Wilmington High School saw enrollment fall 4% between 2020-21 and 2024-25.

Community posts for Wilmington High School can cover science fairs, picture day, and bus routes. Questions from prospective families are welcome too.

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 High School
District
Wilmington CUSD 209U
Address
209 Wildcat Ct, Wilmington, IL 60481
Phone
(815) 926-1752
County
Will County
Level
High
Grade range
09–12
Total enrollment
432
Teachers (FTE)
30
Student–teacher ratio
14.6:1
Free and reduced lunch
189 (44%)
Locale
41-Rural: Fringe
NCES ID
174263004284
Charter school
No
Virtual school
No

Related schools

Other schools in Wilmington CUSD 209U
Other schools in Wilmington
Other Wilmington High schools

2 other US public schools in 3 states are named Wilmington High. Wilmington High School is the 3rd largest of the 3.

Nearby schools

Frequently asked questions

About Wilmington High School
How large is Wilmington High School?
Wilmington High School enrolls approximately 432 students in grades 09-12.
Is Wilmington High School an elementary, middle, or high school?
Wilmington High School is a high school covering grades 09-12.
What is the student-teacher ratio at Wilmington High School?
The student-to-teacher ratio at Wilmington High School is approximately 14.6:1 (30 FTE teachers).
What is the racial breakdown of students at Wilmington High School?
At Wilmington High School, the student body is approximately 81% White, 16% Hispanic, 1% Black, 0% Asian, 3% Two or more.
Is Wilmington High School public or private?
Wilmington High School is a public K-12 school, overseen by Wilmington CUSD 209U.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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