Enrollment
412
Missouri · 2024-25 NCES data
Elementary school (grades K-5) · O'fallon, MO
Joseph L. Mudd Elem.
Federal NCES profile for Joseph L. Mudd Elem., including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 44/100.
2024-25 NCES dataElementary school (grades K-5)NCES 290837000235
👥 S:T ratio 48
🌟 Gifted program 70
🎓 Counselors 18
📋 Attendance 38
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Joseph L. Mudd Elem. earns 44/100 on the Resource Investment Index, with class sizes near the Missouri median.
- #11 of 12
- elementary schools in O'fallon · Resource Index
- 44
- Resource Index · Typical
- 12.9:1
- students per teacher
- 24.9%
- free-lunch eligible
Joseph L. Mudd Elem. has class sizes near the Missouri median. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Joseph L. Mudd Elem. ranks #11 of 12 elementary schools in O'fallon, MO.
School address
District: Ft. Zumwalt R-Ii · Missouri
NCES ID 290837000235 Verify on NCES CCD record →
Teachers (FTE)
32.0
Federal CCD staff survey
Students per teacher
12.9:1
vs 12.8:1 Missouri avg
+1% vs state
Free-lunch eligible
24.9%
vs 46.1% Missouri avg
-46% vs state
Student-teacher ratio in context
How Joseph L. Mudd Elem. compares with Missouri and U.S. medians
What stands out at Joseph L. Mudd Elem.
Joseph L. Mudd Elem. is a mid-sized elementary school in O'fallon, Missouri, enrolling 412 students.
At 12.9:1, its student-teacher ratio sits close to the Missouri median, within a few percentage points of the 12.8:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 24.9% of students eligible for free meals.
Enrollment of 412 puts it in the larger third of Missouri schools by headcount.
Its Resource Investment Index lands in the lower third of 2,313 scored Missouri schools.
Among 448 similarly sized, similarly resourced-need Missouri schools statewide, it ranks #343, in the lower tier once campus size and economic need are matched.
Its student body is led by White (73%) and Hispanic or Latino (11%) (diversity index 45/100).
Counselor access is stretched at roughly 412 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance runs somewhat below the norm, with 24.8% of students chronically absent per the 2021-22 civil-rights collection.
Ft. Zumwalt R-Ii also operates Ft. Zumwalt West High (1,643 students) and Ft. Zumwalt North High (1,538 students) alongside Joseph L. Mudd Elem..
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 L. Mudd Elem. compares
Joseph L. Mudd Elem. on the metrics families compare, against Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.9:1 | ▲ 1% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 24.9% | ▼ 46% | 46.1% | 51.7% |
| Enrollment | 412 | top 32% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.9:1
Leaner classes than 68% of US schools, among the more generously staffed nationally.
412
Bigger than 49% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
24.9%
free-lunch eligible
- 46% below the Missouri average of 46.1%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
12.9:1
students per teacher
- 1% above state mean
Top 53% in Missouri - lower ratio than 47% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
24.8%
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
$12,920
per pupil, district-wide
- below Missouri avg of $12,931
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 412 students, the combined health-and-guidance staffing load for this school.
Discipline context
5
in-school suspensions + 3 out-of-school
Suspension rate: 1.2 per 100 students. Combined in-school and out-of-school rate: 1.9 per 100 students. Reported via the Civil Rights Data Collection.
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 72.8%
Hispanic or Latino 11.2%
African American 6.3%
Two or More 5.6%
Asian 3.4%
Native Hawaiian / Pacific Islander 0.7%
Largest group: White at 72.8% of enrollment.
Student-body diversity index 44.9/100
Simpson diversity index - at 44.9, Joseph L. Mudd Elem. is more mixed than the Missouri school average of 31.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Ft. Zumwalt R-Ii, which includes Joseph L. Mudd Elem..
$12,920
Per student
0%
vs Missouri
Avg $12,931
-22%
vs U.S.
Avg $16,593
Revenue mix
Local 65.1%
State 26.3%
Federal 8.6%
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 L. Mudd Elem. Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Ft. Zumwalt West High | Larger | Lower economic need | Similar S:T ratio |
| Ft. Zumwalt North High | Larger | Lower economic need | Similar S:T ratio |
| Ft. Zumwalt South High | Larger | Lower economic need | Similar S:T ratio |
| Ft. Zumwalt East High | Larger | Similar economic need | Similar S:T ratio |
| Ft. Zuwmalt West Middle | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Joseph L. Mudd Elem.'s own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,643
- Students per teacher
- 13.6:1
- Resource Index
- 41/100
- Enrollment
- 1,538
- Students per teacher
- 14.1:1
- Resource Index
- 35/100
- Enrollment
- 1,212
- Students per teacher
- 12.9:1
- Resource Index
- 42/100
- Enrollment
- 1,171
- Students per teacher
- 13.2:1
- Resource Index
- 38/100
- Enrollment
- 1,114
- Students per teacher
- 12:1
- Resource Index
- 52/100
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Missouri, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~412 students)
Similar student-teacher ratio (~12.9:1)
Next steps
Verify locally before acting on Joseph L. Mudd Elem.'s federal record.
- Compare Joseph L. Mudd Elem. against another school. Compare schools
- Ft. Zumwalt R-Ii'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 L. Mudd Elem.
How many students attend Joseph L. Mudd Elem.?
Joseph L. Mudd Elem. has 412 students enrolled. It is an elementary school in O'fallon, MO.
What is the student-teacher ratio at Joseph L. Mudd Elem.?
The student-teacher ratio at Joseph L. Mudd Elem. is 12.9:1, which is 1% higher than the Missouri average of 12.8:1 and 18% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Joseph L. Mudd Elem.?
24.9% of students at Joseph L. Mudd Elem. are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Joseph L. Mudd Elem.?
The largest demographic group at Joseph L. Mudd Elem. is White at 72.8% of enrollment, in O'fallon, MO.
What is the Resource Investment Index for Joseph L. Mudd Elem.?
Joseph L. Mudd Elem. has a Resource Investment Index of 44/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Joseph L. Mudd Elem. rank among elementary schools in O'fallon?
By Resource Investment Index, Joseph L. Mudd Elem. ranks #11 of 12 elementary schools in O'fallon, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in O'fallon on the city page.
Is Joseph L. Mudd Elem. a good school?
Joseph L. Mudd Elem. earns 44/100 on the Resource Investment Index, with class sizes near the Missouri median. 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 Ft. Zumwalt R-Ii?
Besides Joseph L. Mudd Elem., Ft. Zumwalt R-Ii also operates Ft. Zumwalt West High (1,643 students), Ft. Zumwalt North High (1,538 students), and Ft. Zumwalt South High (1,212 students). See the Ft. Zumwalt R-Ii 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.