Jefferson Jr High School

Jefferson Jr High School is one of the expansive 6-8 campuss in Naperville, Illinois, run under Naperville CUSD 203, with 832 students on its rolls from grades 6 through 8. Enrollment runs roughly 80% bigger than the state mean of about 462.

Within Naperville CUSD 203, which oversees 22 schools and 16,047 students, Jefferson Jr High School is one campus in the system.

Demographically, Jefferson Jr High School lists that the largest single group is White at 47%, but no single group is in the majority; the rest breaks down as 25% Hispanic, 16% Asian, 7% Black, 5% multiracial. The wider county runs roughly 65% White, putting the school's mix meaningfully less White than the area baseline.

Looking at the economic backdrop, The school currently runs with 68 full-time-equivalent teachers, for a student-teacher ratio near 12.3:1. The state averages around 13.0:1, so this campus is tighter than the state norm typical. Roughly 29% of students at Jefferson Jr High School qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal.

With demographic context factored in, Jefferson Jr High School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 54.7%, the actual is 63.8%, a residual of +9.0 points.

In the broader community, census data for DuPage County shows median household earnings sit near $112,096, about 52% of the adult population holds a bachelor's degree or above, and roughly 5% of residents live below the federal poverty line. In all, DuPage County runs 277 public schools (combined enrollment of about 138,557 students), of which Jefferson Jr High School is one.

Beebe Elem School is the nearest neighboring public school, about 0.4 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Jefferson Jr High School at 8th of 9; the average score across the group is 73.5%.

Geographically, the school is in a downtown area.

Trend over the last 7 years. Jefferson Jr High School's enrollment has decreased 4% since 2018, when it stood at 870 (now 832). White enrollment moved from 52% to 47% across the same window. Class-load math has narrowed: from 14.2:1 in 2018 to 12.3:1 in 2025.

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