Enrollment
299
Middle
DISTRICT 315 · STATE 462
SCHOOL COMMUNITY·CENTRAL SD 104·NCES 170917006007
Joseph Arthur Middle School
160 Saint Ellen Mine Rd, O Fallon, IL 62269 · (618) 632-6336 · St. Clair County
GRADES 04–08MIDDLE21-SUBURBREGULAR SCHOOL299 STUDENTS
Student : Teacher
12.2:1
25 FTE teachers
DISTRICT 11.5:1 · STATE 13.0:1
Free / Reduced Lunch
,
Title I proxy
DISTRICT 44% · STATE 56%
Community
0
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 4 | 66 | 22% |
| Grade 5 | 52 | 17% |
| Grade 6 | 56 | 19% |
| Grade 7 | 65 | 22% |
| Grade 8 | 60 | 20% |
Student demographics
71%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 71% · STATE 69% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within Central SD 104. Attendance zones can vary; confirm enrollment with the district.
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)English Language Arts
57.1%
IL avg 51.0% . +29.3pp since 2023
Math
34.7%
IL avg 37.9% . +17.1pp since 2023
What this means: On the IAR + ISA, Illinois's statewide test, about 57 of every 100 students at this school read and write at grade level and about 35 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 29 points since 2023, while math scores are up about 17 points.
IAR + ISA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 57.1% | 34.7% |
| 2023-24 | 27.8% | 17.6% |
% Proficient (Levels 4-5), all students and all tested grades.
Source: IAR + ISA. All students, all grades. See all years and grades →
Where Joseph Arthur Middle School ranks
Among middle schools| Measure | This school | In Illinois | In St. Clair County |
|---|---|---|---|
| Math proficiency ranked highest first | 34.7% | #296 of 640 ▲ 130 | #8 of 19 ▲ 3 |
| Reading proficiency ranked highest first | 57.1% | #321 of 640 ▲ 196 | #11 of 19 ▲ 5 |
| Enrollment ranked largest first | 299 | #455 of 691 | #14 of 20 |
| Students per teacher ranked fewest first | 12.2:1 | #198 of 558 | #4 of 17 |
| Diversity index ranked most diverse first | 70.7% | #30 of 560 | #1 of 17 |
| Enrollment change since 2017-18 ranked fastest growth first | +29.4% | #16 of 127 | N/A |
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
299
+37 (+14%) vs 2020
+39% since 2010-11, when it was 215
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 299 | 24.5 | 12.2:1 | N/A |
| 2023-24 | 252 | 20 | 12.6:1 | 63% (159) |
| 2022-23 | 234 | 15.8 | 14.8:1 | 54% (126) |
| 2020-21 | 262 | N/A | N/A | N/A |
| 2017-18 | 231 | 18 | 12.8:1 | 57% (131) |
| 2015-16 | 242 | 19 | 12.7:1 | 54% (131) |
| 2010-11 | 215 | 16 | 13.4:1 | 53% (113) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Joseph Arthur Middle School.
Since 2017-18: students up 29% (231 to 299); teachers up 36% (18 to 24.5).
About Joseph Arthur Middle School
Federal records list Joseph Arthur Middle School as a middle school in O Fallon, Illinois. The grade span is 4 through 8, and enrollment is 299 students. Average enrollment for middle schools in Illinois is about 462, so this school runs 35% smaller than that.
Joseph Arthur Middle School is one school in Central SD 104, a system of 2 schools with 629 students.
Joseph Arthur Middle School has no majority group; White students are the largest, at 38%. Other students are 35% Black, 10% Hispanic, 9% multiracial, and 5% Asian. By comparison, St. Clair County residents are about 60% White. The school's diversity index is 71%, meaning two students picked at random have a 71% chance of belonging to different racial or ethnic groups.
With 24.5 full-time-equivalent teachers in 2024-25, the ratio at Joseph Arthur Middle School was 12.2:1. This ratio sits 0.8 below the 13.0:1 average for middle schools in Illinois.
County data help place the school in context: in St. Clair County, the median household income is $73,854, roughly 32% of adults have a four-year degree or more, and about 10% of residents live below the federal poverty line. St. Clair County is home to 96 public schools and about 40,879 public school students.
The closest public school, Dawn Elser Elementary School, is about 0.3 miles from Joseph Arthur Middle School. There are at least 8 other public schools within five miles.
The federal government classifies Joseph Arthur Middle School's location as Suburb: Large.
Enrollment has grown by 37 students since 2020-21, to 299.
Posts about school events, clubs, and volunteer needs are welcome on this page. Reviews and ratings from people who know the school are welcome.
St. Clair County at a glance
View full county profilePopulation
253,694
Census ACS
Median income
$73,854
Household, ACS
Bachelor's+
32%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
96
40,879 students
Quick facts
Related schools
Other schools in Central SD 104
- Dawn Elser Elementary SchoolElementary · 330 students
Other schools in O Fallon
- O Fallon High SchoolHigh · 2,540 students
- Fulton Jr High SchoolMiddle · 667 students
- Amelia V Carriel Jr HighMiddle · 664 students
- Marie Schaefer Elementary SchoolElementary · 598 students
- Delores Moye Elementary SchoolElementary · 595 students
- Estelle Kampmeyer Elementary SchoolElementary · 465 students
Nearby schools
- Dawn Elser Elementary School0.3 mi · 330
- Pontiac Jr High School1.2 mi · 212
- William Holliday Elementary School1.2 mi · 418
- J Emmett Hinchcliffe Sr Elementary School1.9 mi · 452
- Marie Schaefer Elementary School2.1 mi · 598
- Fulton Jr High School2.7 mi · 667
Frequently asked questions
About Joseph Arthur Middle SchoolHow large is Joseph Arthur Middle School?
Joseph Arthur Middle School enrolls approximately 299 students in grades 04-08.
What age range does Joseph Arthur Middle School serve?
Joseph Arthur Middle School serves students from grade 04 through grade 08.
What is the student-teacher ratio at Joseph Arthur Middle School?
The student-to-teacher ratio at Joseph Arthur Middle School is approximately 12.2:1 (25 FTE teachers).
What is the racial breakdown of students at Joseph Arthur Middle School?
At Joseph Arthur Middle School, the student body is approximately 38% White, 10% Hispanic, 35% Black, 5% Asian, 9% Two or more.
What district is Joseph Arthur Middle School in?
Joseph Arthur Middle School is part of Central SD 104.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.