Enrollment
535
Missouri · 2024-25 NCES data
Middle school (grades 6-8) · Barnhart, MO
Federal NCES profile for Antonia Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
The verdict
Antonia Middle School earns 40/100 on the Resource Investment Index, with class sizes near the Missouri median.
Antonia Middle School has class sizes near the Missouri median. Computed live against every Missouri school reporting to NCES.
Enrollment
535
Missouri · 2024-25 NCES data
Teachers (FTE)
44.0
Federal CCD staff survey
Students per teacher
12.2:1
vs 12.8:1 Missouri avg
-5% vs state
Free-lunch eligible
18.9%
vs 46.1% Missouri avg
-59% vs state
How Antonia Middle School compares with Missouri and U.S. medians
At or below state median
12.2:1 - 0.6 below the Missouri state median of 12.8:1, indicating smaller average class loads than typical schools in the state.
Antonia Middle School is a lower-poverty, mid-sized middle school in Barnhart, Missouri, enrolling 535 students.
At 12.2:1, 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 18.9% of students eligible for free meals.
Enrollment of 535 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 395 similarly sized, similarly resourced-need Missouri schools statewide, it ranks #353, in the lower tier once campus size and economic need are matched.
Its student body is predominantly White (91% of enrollment) (diversity index 17/100).
Counselor access is stretched at roughly 535 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance runs somewhat below the norm, with 24.1% of students chronically absent per the 2021-22 civil-rights collection.
Fox C-6 also operates Seckman Sr. High (1,737 students) and Fox Sr. High (1,660 students) alongside Antonia Middle School.
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
Antonia Middle School on the metrics families compare, against Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.2:1 | ▼ 5% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 18.9% | ▼ 59% | 46.1% | 51.7% |
| Enrollment | 535 | top 19% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 91.2% of enrollment.
Simpson diversity index - at 16.6, Antonia Middle School is less mixed than the Missouri school average of 31.0.
District-wide per-pupil expenditure for Fox C-6, which includes Antonia Middle School.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Seckman Sr. High | Larger | Similar economic need | Higher S:T ratio |
| Fox Sr. High | Larger | Similar economic need | Higher S:T ratio |
| Seckman Middle | Larger | Similar economic need | Similar S:T ratio |
| Fox Middle | Similar size | Similar economic need | Similar S:T ratio |
| Ridgewood Middle | Similar size | Higher economic need | Similar S:T ratio |
Comparisons are relative to Antonia Middle School's own figures; each column derives from NCES Common Core of Data.
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.
Next steps
Verify locally before acting on Antonia Middle School's federal record.
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.
Antonia Middle School has 535 students enrolled. It is a middle school in Barnhart, MO.
The student-teacher ratio at Antonia Middle School is 12.2:1, which is 5% lower than the Missouri average of 12.8:1 and 22% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
18.9% of students at Antonia Middle School are eligible for free lunch, compared to the Missouri average of 46.1%.
The largest demographic group at Antonia Middle School is White at 91.2% of enrollment, in Barnhart, MO.
Antonia Middle School has a Resource Investment Index of 40/100 (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).
Antonia Middle School earns 40/100 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.
Besides Antonia Middle School, Fox C-6 also operates Seckman Sr. High (1,737 students), Fox Sr. High (1,660 students), and Seckman Middle (687 students). See the Fox C-6 district page for the complete list.
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.
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Last updated:
PlainSchools, “Antonia Middle School, Barnhart MO.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/antonia-middle-school-mo
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