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SCHOOL COMMUNITY·NAPERVILLE CUSD 203·NCES 172771002933

Jefferson Jr High School

1525 N Loomis St, Naperville, IL 60563 · (630) 420-6363 · DuPage County
GRADES 06–08MIDDLE12-CITYREGULAR SCHOOL832 STUDENTS
A-
allk12 Grade
Scored higher than 84% of Illinois public middle schools
  • A-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

Enrollment
832
Middle
DISTRICT 732 · STATE 462
Student : Teacher
12.3:1
68 FTE teachers
DISTRICT 13.2:1 · STATE 13.0:1
Free / Reduced Lunch
29%
242 students
DISTRICT 17% · STATE 56%
Community
5
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

GradeStudentsShare
Grade 625831%
Grade 731338%
Grade 826131%
Student demographics
68%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 61% · STATE 69% · US 70%
White
39247%
DISTRICT 57% · STATE 45% · US 43%
Hispanic
20525%
DISTRICT 12% · STATE 29% · US 30%
Black
587%
DISTRICT 5% · STATE 16% · US 15%
Asian
13116%
DISTRICT 19% · STATE 6% · US 6%
Two+
425%
DISTRICT 6% · STATE 5% · US 5%
Native American
30%
DISTRICT 0% · STATE 0% · US 1%
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
40248%
Female
42952%

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Test scores

IAR + ISA 2024-25 . % Proficient (Levels 4-5)
English Language Arts
74.1%
IL avg 51.0% . +8.6pp since 2023
Math
54.2%
IL avg 37.9% . +10.9pp since 2023

What this means: On the IAR + ISA, Illinois's statewide test, about 74 of every 100 students at this school read and write at grade level and about 54 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 9 points since 2023, while math scores are up about 11 points.

IAR + ISA results by year

School yearEnglish Language ArtsMath
2024-2574.1%54.2%
2023-2465.5%43.3%
% 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 · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
63.8%
composite math + reading, all grades
Predicted
54.7%
based on IL schools with similar FRL share
Beats by
+9.0pp
above demographic expectation

What this means: About 64% of students here test proficient in math and reading, compared with the roughly 55% 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 Jefferson Jr High School

Jefferson Jr High School's state test result (63.8% proficient) is higher than 5 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Jefferson Jr High School this school83229.1%63.8%
Eastview Middle School
Bartlett
75728.5%56.0%
Evans Junior High School
Bloomington
77830.3%52.9%
Glen Crest Middle School
Glen Ellyn
72326.6%56.0%
Glenn Westlake Middle School
Lombard
93530.6%47.2%
Fischer Middle School
Aurora
86134.5%45.0%
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 Jefferson Jr High School ranks

Among middle schools
MeasureThis schoolIn IllinoisIn DuPage County
State test proficiency
ranked highest first
63.8%#70 of 578#17 of 43
Math proficiency
ranked highest first
54.2%#117 of 640
▲ 13
#24 of 51
▲ 2
Reading proficiency
ranked highest first
74.1%#137 of 640
▼ 2
#26 of 51
no change
Enrollment
ranked largest first
832#72 of 691#8 of 51
Students per teacher
ranked fewest first
12.3:1#207 of 558#23 of 48
Diversity index
ranked most diverse first
68.4%#56 of 560#8 of 48
Free and reduced lunch
ranked highest share first
29.1%#464 of 581#27 of 43
Enrollment change since 2017-18
ranked steepest decline first
-4.4%#377 of 440#30 of 37
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 2024-25
Enrollment
832
+22 (+3%) vs 2020
-9% since 1990-91, when it was 911
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2583267.812.3:129% (242)
2023-2484968.612.4:130% (252)
2022-2381765.912.4:129% (235)
2020-21810N/AN/AN/A
2017-1887061.214.2:124% (208)
2015-169006114.8:123% (203)
2010-118905915.1:120% (175)
2000-019505916.1:1N/A
1990-919115416.9:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Jefferson Jr High School.

Since 2017-18: students down 4% (870 to 832); teachers up 11% (61.2 to 67.8).

About Jefferson Jr High School

Jefferson Jr High School is listed by the National Center for Education Statistics as a middle-grades school in Naperville, Illinois. The school's enrollment of 832 students covers grades 6 through 8. Enrollment is 80% higher than the average for middle schools in Illinois, which is about 462.

The 22 schools in Naperville CUSD 203 enroll 16,047 students altogether, Jefferson Jr High School among them.

No single group makes up more than half of enrollment at Jefferson Jr High School. The largest is White students, at 47%. Smaller groups are 25% Hispanic, 16% Asian, 7% Black, and 5% multiracial. For comparison, the population of DuPage County is roughly 65% White. Jefferson Jr High School's diversity index is 68%, against a US figure of 70%.

Jefferson Jr High School's 67.8 full-time-equivalent teachers put its ratio at 12.3:1. On average, middle schools in Illinois have 13.0:1, compared with 12.3:1 here. The school's rate of free or reduced-price lunch eligibility is 29%.

The allk12 Grade for Jefferson Jr High School is A-. Compared with Illinois public middle schools, the school scored higher than 84% on a mix of test scores, poverty-adjusted results, and recent trend.

The model predicts 54.7% for a school in Illinois with Jefferson Jr High School's free or reduced-price lunch share. Jefferson Jr High School posts 63.8%.

DuPage County has about 930,024 residents, and the median household income is $112,096, about 52% of adults have at least a bachelor's degree, and the poverty rate is about 5%. In all, DuPage County has 277 public schools and roughly 138,557 students.

The closest public school to Jefferson Jr High School is Beebe Elementary School, about 0.4 miles away. Jefferson Jr High School is one of several public schools in the area, with at least 8 others within five miles. Among 9 nearby schools that report test results, Jefferson Jr High School ranks 8th on proficiency.

NCES assigns Jefferson Jr High School the locale City: Mid-size, meaning inside a principal city with a population between 100,000 and 250,000.

Enrollment is up 3% from 2020-21, when Jefferson Jr High School had 810 students, to 2024-25, when it had 832.

Conversations here can range across school safety, transportation, and start times. Posting is open to anyone connected to the school.

DuPage County at a glance

View full county profile
Population
930,024
Census ACS
Median income
$112,096
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
277
138,557 students

Quick facts

School name
Jefferson Jr High School
District
Naperville CUSD 203
Address
1525 N Loomis St, Naperville, IL 60563
Phone
(630) 420-6363
County
DuPage County
Level
Middle
Grade range
06–08
Total enrollment
832
Teachers (FTE)
68
Student–teacher ratio
12.3:1
Free and reduced lunch
242 (29%)
Locale
12-City: Mid-size
NCES ID
172771002933
Charter school
No
Virtual school
No

Related schools

Other schools in Naperville CUSD 203
Other schools in Naperville
Other Jefferson Junior High schools

2 other US public schools in 3 states are named Jefferson Junior High. Jefferson Jr High School is the largest of the 3.

Nearby schools

Frequently asked questions

About Jefferson Jr High School
What is the total enrollment at Jefferson Jr High School?
Jefferson Jr High School enrolls approximately 832 students in grades 06-08.
What age range does Jefferson Jr High School serve?
Jefferson Jr High School serves students from grade 06 through grade 08.
How many teachers does Jefferson Jr High School have?
Jefferson Jr High School employs 68 FTE teachers, for a student-to-teacher ratio of 12.3:1.
What is the student diversity at Jefferson Jr High School?
Student demographics at Jefferson Jr High School are roughly 47% White, 25% Hispanic, 7% Black, 16% Asian, 5% Two or more.
Is Jefferson Jr High School public or private?
Jefferson Jr High School is a public K-12 school, overseen by Naperville CUSD 203.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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