Enrollment
299
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · O Fallon, IL
Joseph Arthur Middle School
Federal NCES profile for Joseph Arthur Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 26/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170917006007
👥 S:T ratio 20
🌟 Gifted program 30
📋 Attendance 28
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Joseph Arthur Middle School earns 26/100 on the Resource Investment Index, with class sizes larger than 95% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
- #10 of 10
- public schools in O Fallon · Resource Index
- 26
- Resource Index · Lower
- 19.9:1
- large classes for Illinois
- 299
- students enrolled
Joseph Arthur Middle School has class sizes larger than 95% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Joseph Arthur Middle School ranks #10 of 10 public schools in O Fallon, IL.
School address
District: Central Sd 104 · Illinois
NCES ID 170917006007 Verify on NCES CCD record →
Teachers (FTE)
15.0
Federal CCD staff survey
Students per teacher
19.9:1
vs 14:1 Illinois avg
+42% vs state
Student-teacher ratio in context
How Joseph Arthur Middle School compares with Illinois and U.S. medians
What stands out at Joseph Arthur Middle School
Joseph Arthur Middle School is a mid-sized elementary school in O Fallon, Illinois, enrolling 299 students.
Class loads run heavy: 19.9:1 is larger than about 95% of Illinois schools and 42% above the 14:1 state mean, so each teacher carries more students than is typical.
With 299 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by White (38%) and African American (36%), more mixed than most schools in the state (diversity index 71/100).
Chronic absenteeism is elevated: 28.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The federal civil-rights collection also records 6 expulsions at this campus for 2021-22.
Among O Fallon's elementary schools, it stands alongside Laverna Evans Elem School (421 students): Joseph Arthur Middle School is smaller than that campus by headcount and runs leaner classes (19.9:1 vs 21.1:1).
Its district, Central Sd 104, also runs Central Elem School (330 students).
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 Joseph Arthur Middle School compares
Joseph Arthur Middle 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 | 19.9:1 | ▲ 42% | 14:1 | 15.7:1 |
| Enrollment | 299 | top 64% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
19.9:1
Leaner classes than 16% of US schools, heavier class loads than most.
299
Bigger than 32% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
19.9:1
students per teacher
- 42% above state mean
Top 95% in Illinois - lower ratio than 5% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
28.8%
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
$14,021
per pupil, district-wide
- below Illinois avg of $17,042
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection. Includes 6 expulsions.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 38.1%
African American 35.5%
Hispanic or Latino 10.4%
Two or More 9.4%
Asian 5.0%
Native Hawaiian / Pacific Islander 1.3%
American Indian / Alaska Native 0.3%
Largest group: White at 38.1% of enrollment.
Student-body diversity index 70.6/100
Simpson diversity index - at 70.6, Joseph Arthur Middle School is more mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Central Sd 104, which includes Joseph Arthur Middle School.
$14,021
Per student
-18%
vs Illinois
Avg $17,042
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 65.6%
State 25.4%
Federal 9.0%
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 Joseph Arthur Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Central Elem School | Similar size | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Joseph Arthur Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 330
- Students per teacher
- 10.3:1
- Resource Index
- 37/100
Similar elementary schools in O Fallon
1 comparable elementary schools (grades K-5) serving the same city.
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~299 students)
Next steps
Verify locally before acting on Joseph Arthur Middle School's federal record.
- Compare Joseph Arthur Middle School against another school. Compare schools
- Central Sd 104'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 Joseph Arthur Middle School
How many students attend Joseph Arthur Middle School?
Joseph Arthur Middle School has 299 students enrolled. It is an elementary school in O Fallon, IL.
What is the student-teacher ratio at Joseph Arthur Middle School?
The student-teacher ratio at Joseph Arthur Middle School is 19.9:1, which is 42% higher than the Illinois average of 14:1 and 27% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Joseph Arthur Middle School?
The largest demographic group at Joseph Arthur Middle School is White at 38.1% of enrollment, in O Fallon, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 70.6/100.
What is the Resource Investment Index for Joseph Arthur Middle School?
Joseph Arthur Middle School has a Resource Investment Index of 26/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Joseph Arthur Middle School rank among public schools in O Fallon?
By Resource Investment Index, Joseph Arthur Middle School ranks #10 of 10 public schools in O Fallon, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in O Fallon on the city page.
Is Joseph Arthur Middle School a good school?
Joseph Arthur Middle School earns 26/100 on the Resource Investment Index, with class sizes larger than 95% of Illinois schools. 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 Central Sd 104?
Besides Joseph Arthur Middle School, Central Sd 104 also operates Central Elem School (330 students). See the Central Sd 104 district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.