Metro East school reports › St. Clair County › Central SD 104
Joseph Arthur Middle School
Joseph Arthur Middle School is a public middle/junior high school in Central SD 104, serving grades 4 - 8 in O'Fallon, St. Clair County, Illinois. In the 2025 Illinois Report Card (2024-25 school year), the Illinois State Board of Education designated it Commendable, the same designation it received in 2023 and 2024.
State designation, last three report cards
- 2023Commendable
- 2024Commendable
- 2025Commendable
What Commendable means: No student group performing at or below the level of the lowest 5 percent of schools, and overall performance outside the top 10 percent statewide.
How it compares with other St. Clair County middle and junior high schools
| Measure | This school | County median | Diff. |
|---|---|---|---|
| ELA proficiency | 55.8% | 62.4%16 schools | -6.6 pts |
| Math proficiency | 33.9% | 29.8%16 schools | +4.1 pts |
| Chronic absenteeism | 24.0% | 27.6%17 schools | -3.6 pts |
| Average class size | 20.5 | 20.917 schools | -0.4 |
| Low-income enrollment | 57.6% | 55.8%17 schools | +1.8 pts |
Median of other middle and junior high schools in St. Clair County with reported data, this school excluded, not weighted by enrollment. Proficiency is from the 2024-25 state tests. Illinois changed its proficiency cut scores in 2025, so these percentages cannot be compared with earlier years.
What stands out
- ELA proficiency is 6.6 points below the median for other St. Clair County middle and junior high schools (62.4%). Worth asking the school about.
Before you buy for this school
- Confirm the attendance boundary for the exact address with Central SD 104. Boundaries change, and a listing's school field is not a guarantee.
- Visit. A designation summarizes test results, growth and attendance. It does not describe a classroom.
- Read the full report card for student-group results, growth and staffing.
Thinking about living here? Read the O'Fallon area guide.
Looking for a home near Joseph Arthur Middle School?
Tell me what you're looking for and I'll send homes for sale in this school's attendance area, with the boundary confirmed with the district.
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Other schools in Central SD 104
- Dawn Elser Elementary School Commendable
Sources
- Illinois Report Card: Joseph Arthur Middle School
- ISBE Report Card Public Data Sets, 2023, 2024 and 2025, retrieved 2026-10-06
- ISBE 2025 Report Card Glossary (designation definitions)
This page reports state-published data. It is not a rating or recommendation by Single Tree Team.
