Serving 832 students in grades 6-8, Jefferson Jr High School ranks in the top 20% of all schools in Illinois for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 43% (which is higher than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 50% (which is higher than the Illinois state average of 30%).
The student-teacher ratio of 12:1 is lower than the Illinois state level of 13:1.
Minority enrollment is 53% of the student body (majority Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (2026)
- Grades: 6-8
- Enrollment: 832 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 53%
- Overall Testing Rank: Top 20% in IL
- Math Proficiency: 43% (Top 20%)
- Reading Proficiency: 50% (Top 20%)
- Science Proficiency: 73% (Top 20%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Jefferson Jr High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Jefferson Jr High School's student population of 832 students has stayed relatively flat over five school years.
The teacher population of 68 teachers has grown by 11% over five school years.
Grades Offered
Grades 6-8
Total Students
832 students
Total Classroom Teachers
68 teachers
School Calendar
School Rankings
Jefferson Jr High School ranks within the top 20% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Jefferson Jr High School is 0.69, which is equal to the diversity score at state average of 0.69. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#503 out of 3542 schools
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
43%
27%
Reading/Language Arts Test Scores (% Proficient)
50%
30%
Science Test Scores (% Proficient)
73%
50%
Student-Teacher Ratio
12:1
13:1
American Indian
n/a
n/a
Asian
16%
6%
Hispanic
25%
29%
Black
7%
16%
White
47%
45%
Hawaiian
n/a
n/a
Two or more races
5%
4%
All Ethnic Groups
Chronically Absent Students
(22-23)20.4%
29.7%
Eligible for Free Lunch
21%
43%
Eligible for Reduced Lunch
5%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Frequently Asked Questions
What is Jefferson Jr High School's ranking?
Jefferson Jr High School is ranked #503 out of 3,542 schools, which ranks it among the top 20% of public schools in Illinois.
What schools are Jefferson Jr High School often compared to?
Jefferson Jr High Schoolis often viewed alongside schools like Kennedy Junior High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
43% of students have achieved math proficiency (compared to the 27% IL state average), while 50% of students have achieved reading proficiency (compared to the 30% IL state average).
How many students attend Jefferson Jr High School?
832 students attend Jefferson Jr High School.
What is the racial composition of the student body?
47% of Jefferson Jr High School students are White, 25% of students are Hispanic, 16% of students are Asian, 7% of students are Black, and 5% of students are Two or more races.
What is the student-teacher ratio of Jefferson Jr High School?
Jefferson Jr High School has a student ration of 12:1, which is lower than the Illinois state average of 13:1.
What grades does Jefferson Jr High School offer ?
Jefferson Jr High School offers enrollment in grades 6-8
What school district is Jefferson Jr High School part of?
Jefferson Jr High School is part of Naperville CUSD 203 School District.
In what neighborhood is Jefferson Jr High School located?
Jefferson Jr High School is located in the Naperville Park District neighborhood of Naperville, IL. There are 35 other public schools located in Naperville Park District.
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