Central Jr High School
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)What this means: On the IAR + ISA, Illinois's statewide test, about 64 of every 100 students at this school read and write at grade level and about 31 of 100 do math at grade level. Across all Illinois schools, those numbers are about 51 and 38. Reading and writing scores are up about 7 points since 2023, while math scores are up about 5 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 46% of students here test proficient in math and reading, compared with the roughly 35% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 10%.
7-year change
SY 2017-18 vs SY 2024-25About Central Jr High School
Central Jr High School is one of the modestly sized middle-grades schools in Belleville, Illinois, part of Belleville SD 118, with 308 students on its rolls from grades 7 through 8. Enrollment runs roughly 33% smaller than the state mean of about 462.
Across the 11 schools in Belleville SD 118 (3,275 students total), Central Jr High School accounts for its share of the district's footprint.
In terms of who attends, Central Jr High School lists that 44% of students identify as White, with the remaining enrollment distributed across several groups; the rest looks like 40% Black, 11% multiracial, 4% Hispanic. That is meaningfully less White than the county at large, where the share is closer to 60%.
On the income-and-resources front, On paper, Central Jr High School has 24 full-time-equivalent teachers, translating to a class-load average of around 12.7:1. That tracks the state average closely. An estimated 64% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. That share is higher than St. Clair County's rate of about 54%.
On a demographically-adjusted basis, Central Jr High School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 34.6%; this one delivers 45.6%.
Around the school, community-level numbers for St. Clair County indicate the typical household earns roughly $73,854 per year, about 32% of the adult population holds a bachelor's degree or above, and census figures put the poverty rate at about 10%. Central Jr High School is one of 96 public schools in St. Clair County (combined enrollment of about 40,879 students).
Westhaven Elementary is the nearest neighboring public school, about 0.2 miles from this campus. Within five miles, there are 8 other public schools. On composite proficiency, Central Jr High School comes 3rd of 8 in the immediate cluster, higher than the nearby-schools average of 39.7%.
Geographically, the school is in a bedroom-community area.
Five-year trend. Looking back 7 years, enrollment at Central Jr High School has shrank 24%, going from 405 students in 2018 to 308 in 2025. Over the same period, the White share contracted from 54% to 44%. Class-load math has narrowed: from 15.8:1 in 2018 to 12.7:1 in 2025.
In the discussion threads here, the page collects discussion, questions, and updates around science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.
St. Clair County at a glance
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