Enrollment
832
Illinois · 2024-25 NCES data
Middle school (grades 6-8) · Naperville, IL
Jefferson Jr High School
Federal NCES profile for Jefferson Jr High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 172771002933
👥 S:T ratio 50
🌟 Gifted program 30
🎓 Counselors 45
📋 Attendance 43
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Jefferson Jr High School earns 42/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also more racially and ethnically mixed than most Illinois schools.
- #7 of 7
- middle schools in Naperville · Resource Index
- 42
- Resource Index · Typical
- 12.6:1
- students per teacher
- 832
- students enrolled
Jefferson Jr High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Jefferson Jr High School ranks #7 of 7 middle schools in Naperville, IL.
School address
District: Naperville Cusd 203 · Illinois
NCES ID 172771002933 Verify on NCES CCD record →
Teachers (FTE)
65.0
Federal CCD staff survey
Students per teacher
12.6:1
vs 14:1 Illinois avg
-10% vs state
Student-teacher ratio in context
How Jefferson Jr High School compares with Illinois and U.S. medians
What stands out at Jefferson Jr High School
Jefferson Jr High School is a large middle school in Naperville, Illinois, enrolling 832 students.
Class sizes run a bit leaner than typical: 12.6:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
By headcount it is one of the larger campuses in Illinois, bigger than 90% of state schools at 832 students.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is led by White (47%) and Hispanic or Latino (25%), more mixed than most schools in the state (diversity index 68/100).
Counselor coverage runs a bit thin, about 277 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 22.7% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Naperville Cusd 203 spends $21,103 per pupil, 24% above the Illinois average, a better-resourced district than most.
Among Naperville's middle schools, it stands alongside Scullen Middle School (948 students): Jefferson Jr High School is smaller than that campus by headcount and runs leaner classes (12.6:1 vs 14.6:1).
Naperville Cusd 203 also operates Naperville Central High School (2,589 students) and Naperville North High School (2,467 students) alongside Jefferson Jr High School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Jefferson Jr High School compares
Jefferson Jr High School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.6:1 | ▼ 10% | 14:1 | 15.7:1 |
| Enrollment | 832 | top 10% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.6:1
Leaner classes than 73% of US schools, among the more generously staffed nationally.
832
Bigger than 87% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
12.6:1
students per teacher
- 10% below state mean
Top 36% in Illinois - lower ratio than 64% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
22.7%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$21,103
per pupil, district-wide
- above Illinois avg of $17,042
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors3.0 FTE
Per 277 students, the combined health-and-guidance staffing load for this school.
Discipline context
47
in-school suspensions + 22 out-of-school
Suspension rate: 5.6 per 100 students. Combined in-school and out-of-school rate: 8.3 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 832 Top 10% in Illinois - larger than 90% of 3,845 state schools
Teachers (FTE) 65.0
Students per teacher 12.6:1 -10% vs state
Free-lunch eligible -
NCES ID 172771002933
Student demographics
White 47.2%
Hispanic or Latino 24.7%
Asian 15.8%
African American 7.0%
Two or More 5.1%
American Indian / Alaska Native 0.4%
Largest group: White at 47.2% of enrollment.
Student-body diversity index 68.4/100
Simpson diversity index - at 68.4, Jefferson Jr High School is more mixed than the Illinois school average of 38.9.
Programs & staff
Counselors (FTE) 3.0
Students per counselor 277:1
Discipline & special education
Chronically absent 22.7%
In-school suspensions 47
Out-of-school suspensions 22
Funding & spending
District-wide per-pupil expenditure for Naperville Cusd 203, which includes Jefferson Jr High School.
$21,103
Per student
+24%
vs Illinois
Avg $17,042
+27%
vs U.S.
Avg $16,593
Revenue mix
Local 69.9%
State 25.6%
Federal 4.4%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Jefferson Jr High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Naperville Central High School | Larger | No free-lunch data | Higher S:T ratio |
| Naperville North High School | Larger | No free-lunch data | Similar S:T ratio |
| Kennedy Junior High School | Similar size | No free-lunch data | Higher S:T ratio |
| Lincoln Jr High School | Similar size | No free-lunch data | Similar S:T ratio |
| Elmwood Elem School | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Jefferson Jr High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,589
- Students per teacher
- 14.4:1
- Resource Index
- 42/100
- Enrollment
- 2,467
- Students per teacher
- 14:1
- Resource Index
- 35/100
- Enrollment
- 937
- Students per teacher
- 14.3:1
- Resource Index
- 54/100
- Enrollment
- 774
- Students per teacher
- 13.7:1
- Resource Index
- 44/100
- Enrollment
- 726
- Students per teacher
- 15.8:1
- Resource Index
- 41/100
Similar middle schools in Naperville
6 comparable middle schools (grades 6-8) serving the same city.
Scullen Middle School
Standard public school
948 students 14.6:1 students per teacher
Clifford Crone Middle School
Standard public school
891 students 15.2:1 students per teacher
Thayer J Hill Middle School
Standard public school
828 students 13.4:1 students per teacher
Gordon Gregory Middle School
Standard public school
811 students 15.8:1 students per teacher
Lincoln Jr High School
Standard public school
774 students 13.7:1 students per teacher
Madison Jr High School
Standard public school
566 students 12.4:1 students per teacher
Next steps
Verify locally before acting on Jefferson Jr High School's federal record.
- Compare Jefferson Jr High School against another school. Compare schools
- Naperville Cusd 203's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Jefferson Jr High School
How many students attend Jefferson Jr High School?
Jefferson Jr High School has 832 students enrolled. It is a middle school in Naperville, IL.
What is the student-teacher ratio at Jefferson Jr High School?
The student-teacher ratio at Jefferson Jr High School is 12.6:1, which is 10% lower than the Illinois average of 14:1 and 20% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Jefferson Jr High School?
The largest demographic group at Jefferson Jr High School is White at 47.2% of enrollment, in Naperville, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 68.4/100.
What is the Resource Investment Index for Jefferson Jr High School?
Jefferson Jr High School has a Resource Investment Index of 42/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Jefferson Jr High School rank among middle schools in Naperville?
By Resource Investment Index, Jefferson Jr High School ranks #7 of 7 middle schools in Naperville, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Naperville on the city page.
Is Jefferson Jr High School a good school?
Jefferson Jr High School earns 42/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also more racially and ethnically mixed than most Illinois schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Naperville Cusd 203?
Besides Jefferson Jr High School, Naperville Cusd 203 also operates Naperville Central High School (2,589 students), Naperville North High School (2,467 students), and Kennedy Junior High School (937 students). See the Naperville Cusd 203 district page for the complete list.