IllinoisSchoolsJefferson Jr High School

Jefferson Jr High School

PublicRegular
Naperville, Illinois · Naperville CUSD 203
Students849enrolled
FRL30%Free/Reduced Lunch
Ratio12.5:1students:teacher
LevelMiddle6–8
SCHOOL SNAPSHOT
Students849
Grade Span6–8
Student:Teacher12.5:1
Free/Reduced Lunch30%
Title INo
SectorPublic

Academic Performance

State accountability indicators and test performance.

IL Report Card · 2025
IL Report Card 2025: Commendable

Performance indicators

overall
Commendable

Source: California Department of Education — School Dashboard 2025 release.

Student test scores

Percentage of students who met or exceeded the grade-level standard on the most recent state assessment. Each tile is colour-coded: green ≥50%, amber 35-49%, red <35%.

ELA · IL IAR

Grade 6
75%
Grade 7
75%
Grade 8
73%
Overall
74%

Math · IL IAR

Grade 6
48%
Grade 7
59%
Grade 8
54%
Overall
54%

Source: IL IAR 2025. “Proficient” includes students who met or exceeded the standard; small-cell data (fewer than ~10 students) is suppressed by the state and shown as “—”.

How this state measures performance

State-specific testing and accountability details will appear here once the IL Department of Education data ingest completes.