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Elementary · Regular · Grades K to 5

Mill Street Elementary School, Naperville, IL

Mill Street Elementary School is a public elementary school in Naperville, part of Naperville CUSD 203. It enrolled 600 students in 2024-25, with 12.8 students per full-time teacher.Listed in NCES data as "Mill Street Elem School".

Enrollment and teachers

Students
600
Teachers (FTE)
47.0
Students per teacher
12.8
Grades
K to 5

This school's ratio is 0.7 lower than the district figure of 13.5. The Illinois average across schools is 13.7. Ratios count all teachers, including specialists, so they are lower than typical class sizes.

This school12.8
District13.5
Illinois13.7
United States15.3

School details

Address
1300 N Mill St, Naperville, IL 60563
Phone
(630)420-6353
District
Naperville CUSD 203
County
DuPage County
Level
Elementary
Type
Regular
Status
Open
Charter
No
Virtual
No
Locale
City: Midsize
NCES school ID
172771002937
Location from NCES coordinates. Map data OpenStreetMap contributors. Open larger map

School meals

Counts of students eligible for free or reduced-price lunch, as reported to NCES.
Free or reduced-price lunch
20834.7% of enrollment.
Community Eligibility Provision
No

Schools in the Community Eligibility Provision (CEP) serve free meals to all students, so their free lunch counts often reflect direct certification or total enrollment. Free and reduced lunch shares are not comparable between CEP and non-CEP schools.

Related schools

Other elementary schools in Naperville CUSD 203

Elementary schools elsewhere in Naperville

We publish official enrollment and staffing data, not ratings or test scores.

Source: NCES Common Core of Data 2024-25 and F-33 finance 2020, via the Urban Institute Education Data Portal. Last reviewed October 2026. Blank values are not available, not applicable or suppressed in the source. See the methodology.