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SCHOOL COMMUNITY·NAPERVILLE CUSD 203·NCES 172771002937

Mill Street Elementary School

1300 N Mill St, Naperville, IL 60563 · (630) 420-6353 · DuPage County
GRADES KG–05ELEMENTARY12-CITYREGULAR SCHOOL600 STUDENTS
Enrollment
600
Elementary
DISTRICT 489 · STATE 381
Student : Teacher
12.5:1
48 FTE teachers
DISTRICT 14.1:1 · STATE 13.9:1
Free / Reduced Lunch
35%
208 students
DISTRICT 17% · STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Kindergarten8414%
Grade 19716%
Grade 29917%
Grade 310818%
Grade 410718%
Grade 510518%

This year's kindergarten class (84) is 20% smaller than its 5th grade class (105).

Student demographics
70%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 61% · STATE 69% · US 70%
White
27846%
DISTRICT 57% · STATE 45% · US 43%
Hispanic
12220%
DISTRICT 12% · STATE 29% · US 30%
Black
6311%
DISTRICT 5% · STATE 16% · US 15%
Asian
9516%
DISTRICT 19% · STATE 6% · US 6%
Two+
417%
DISTRICT 6% · STATE 5% · US 5%
Native American
10%
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
32554%
Female
27546%

Discussions

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Test scores

IAR + ISA 2024-25 . % Proficient (Levels 4-5)
English Language Arts
80.4%
IL avg 51.0% . +10.7pp since 2023
Math
72.8%
IL avg 37.9% . +11.9pp since 2023

What this means: On the IAR + ISA, Illinois's statewide test, about 80 of every 100 students at this school read and write at grade level and about 73 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 11 points since 2023, while math scores are up about 12 points.

IAR + ISA results by year

School yearEnglish Language ArtsMath
2024-2580.4%72.8%
2023-2469.7%60.9%
% 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
OUTPERFORMING
Top 10% of IL schools after controlling for student poverty
Actual proficiency
73.2%
composite math + reading, all grades
Predicted
51.5%
based on IL schools with similar FRL share
Beats by
+21.7pp
above demographic expectation

What this means: About 73% of students here test proficient in math and reading, well above the roughly 52% typical for Illinois schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 22 points, placing it in Illinois's top 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 Mill Street Elementary School

Mill Street Elementary School's state test result (73.2% proficient) is higher than 4 of the 4 schools below with a result.

SchoolStudentsLow-incomeProficient
Mill Street Elementary School this school60034.7%73.2%
Bartlett Elementary School
Bartlett
61333.9%50.5%
Elizabeth Eichelberger Elementary School
Plainfield
54831.4%55.4%
McCarty Elementary School
Aurora
47835.4%37.8%
Bonnie McBeth Learning Center
Plainfield
75735.3%N/A
Eagle Pointe Elementary School
Plainfield
59430.1%67.4%
Matched among Illinois elementary 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 Mill Street Elementary School ranks

Among elementary schools
MeasureThis schoolIn IllinoisIn DuPage County
State test proficiency
ranked highest first
73.2%#85 of 1,925#18 of 112
Math proficiency
ranked highest first
72.8%#167 of 2,077
▼ 23
#37 of 141
▼ 5
Reading proficiency
ranked highest first
80.4%#128 of 2,077
▼ 18
#28 of 141
▼ 4
Enrollment
ranked largest first
600#274 of 2,419#12 of 163
Students per teacher
ranked fewest first
12.5:1#736 of 2,035#63 of 146
Diversity index
ranked most diverse first
70.3%#139 of 2,042#13 of 146
Free and reduced lunch
ranked highest share first
34.7%#1,683 of 2,132#62 of 123
Enrollment change since 2017-18
ranked steepest decline first
-9.1%#969 of 1,461#63 of 92
Ranked against other public elementary 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
600
+2 (+0%) vs 2020
-16% since 1990-91, when it was 715
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2560047.912.5:135% (208)
2023-2459746.912.7:133% (198)
2022-2359047.212.5:130% (178)
2020-21598N/AN/AN/A
2017-1866044.714.8:130% (197)
2015-166093915.6:129% (176)
2010-117744019.4:122% (171)
2000-017954019.9:1N/A
1990-917153719.3:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Mill Street Elementary School.

Since 2017-18: students down 9% (660 to 600); teachers up 7% (44.7 to 47.9).

About Mill Street Elementary School

Mill Street Elementary School is a large elementary school that serves part of Naperville, Illinois. The school enrolls 600 students, from kindergarten through 5. An average school in this group (elementary schools in Illinois) has about 381 students.

Mill Street Elementary School reports to Naperville CUSD 203, which has 22 schools and 16,047 students.

At Mill Street Elementary School, the largest share of students is White, at 46%. It is also 20% Hispanic, 16% Asian, 11% Black, and 7% multiracial. For comparison, the population of DuPage County is roughly 65% White. Pick two students at random and there is a 70% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.

Its 47.9 full-time-equivalent teachers give the school a ratio of 12.5:1. The school has fewer students per teacher than the 13.9:1 average for elementary schools in Illinois. The school's lunch program data list 35% of students as eligible for free or reduced-price meals. That tracks the 34% average for public schools in DuPage County.

Mill Street Elementary School is a top-10% school in Illinois on BeatsExpectations, beating its predicted average proficiency rate on state tests of 51.5% with an actual 73.2%.

DuPage County has about 930,024 residents, and the median household income is $112,096, a bachelor's degree or higher is held by about 52% of adults, and the share of residents below the poverty line is 5%. In all, DuPage County has 277 public schools and roughly 138,557 students.

Of nearby public schools, Naperville North High School is the closest, at about 0.4 miles. Mill Street Elementary School has at least 8 other public schools within five miles. The school's 73.2% average proficiency ranks 4th among 9 nearby schools.

Mill Street Elementary School is coded as City: Mid-size in federal locale data.

Between 2020-21 and 2024-25, enrollment moved from 598 to 600, a small change.

The discussion area below is open to posts about sports tryouts, band and choir, and theater. Questions from prospective families are welcome too.

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
Mill Street Elementary School
District
Naperville CUSD 203
Address
1300 N Mill St, Naperville, IL 60563
Phone
(630) 420-6353
County
DuPage County
Level
Elementary
Grade range
KG–05
Total enrollment
600
Teachers (FTE)
48
Student–teacher ratio
12.5:1
Free and reduced lunch
208 (35%)
Locale
12-City: Mid-size
NCES ID
172771002937
Charter school
No
Virtual school
No

Related schools

Other schools in Naperville CUSD 203
Other schools in Naperville
Other Mill Street Elementary schools

2 other US public schools in 3 states are named Mill Street Elementary. Mill Street Elementary School is the 2nd largest of the 3.

Nearby schools

Frequently asked questions

About Mill Street Elementary School
How large is Mill Street Elementary School?
Mill Street Elementary School enrolls approximately 600 students in grades KG-05.
What age range does Mill Street Elementary School serve?
Mill Street Elementary School serves students from grade KG through grade 05.
How many students per teacher at Mill Street Elementary School?
Approximately 12.5:1 students per teacher at Mill Street Elementary School.
How diverse is Mill Street Elementary School?
Mill Street Elementary School reports a student body of 46% White, 20% Hispanic, 11% Black, 16% Asian, 7% Two or more.
What district is Mill Street Elementary School in?
Mill Street Elementary School is part of Naperville CUSD 203.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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