Jefferson Jr High School

1525 N Loomis St, Naperville, IL 60563

BSchola Grade
Grades
6–8
Middle
Students
832
Enrolled 2024–25
Students per teacher
12.3 : 1
Full-time teachers
District
Naperville CUSD 203
DuPage County

Schola Grade B · Above average

Letter grade (A–F) · compared with 688 Illinois middle schools · How we grade
Test scores50% proficient in math & reading
84thpercentile
Equity27% of low-income students proficient
74thpercentile
Attendance21% chronically absent
54thpercentile
Class size12.3 students per teacher
57thpercentile

Percentiles compare this school with other Illinois middle schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Jefferson Jr High School

Jefferson Jr High School is a public middle school in Naperville, Illinois, serving grades 6–8. It is part of Naperville CUSD 203. The school is located in a midsize city in DuPage County.

In the 2024–25 school year, 832 students were enrolled, with about 12.3 students for every full-time teacher. That ratio is close to the typical Illinois middle school (12.7 students per teacher). Its Schola Grade is B (above average), compared with 688 Illinois middle schools.

Grades & enrollment

Students per grade, 2024–25Grades 6–8

Location & nearby schools

1525 N Loomis St
Naperville, IL 60563
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School details

Type
Public School · What this means
Level
Middle
Grades offered
6–8
Enrollment (2024–25)
832 students
Students per teacher
12.3 to 1
Charter school
No
Magnet school
No
Locale
City — Midsize
School district
Naperville CUSD 203
County
DuPage County
NCES school ID
172771002933

Schools near Jefferson Jr High School

All 59 schools in Naperville →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.