Enrollment
347
Missouri · 2024-25 NCES data
Middle school (grades 6-8) · Herculaneum, MO
Federal NCES profile for Senn-Thomas Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
The verdict
Senn-Thomas Middle earns 47/100 on the Resource Investment Index, with class sizes larger than 86% of Missouri schools.
Senn-Thomas Middle has class sizes larger than 86% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Senn-Thomas Middle ranks #1 of 3 public schools in Herculaneum, MO.
NCES ID 291425002399 Verify on NCES CCD record →
Enrollment
347
Missouri · 2024-25 NCES data
Teachers (FTE)
22.0
Federal CCD staff survey
Students per teacher
15.8:1
vs 12.8:1 Missouri avg
+23% vs state
Free-lunch eligible
39.0%
vs 46.1% Missouri avg
-15% vs state
How Senn-Thomas Middle compares with Missouri and U.S. medians
Slightly above state median
15.8:1 - 3.0 above the Missouri state median of 12.8:1, indicating larger average class loads than typical schools in the state.
Senn-Thomas Middle is a mid-sized middle school in Herculaneum, Missouri, enrolling 347 students.
Class loads run heavy: 15.8:1 is larger than about 86% of Missouri schools and 23% above the 12.8:1 state mean, so each teacher carries more students than is typical.
Its free-meal eligibility rate of 39.0% lands close to the Missouri typical range, neither a high- nor low-need campus by this measure.
With 347 students, its enrollment sits close to the Missouri median campus size.
Its Resource Investment Index sits near the middle of the pack among 2,313 scored Missouri schools.
Against 524 statewide peers matched on enrollment and economic need, it ranks mid-pack at #283.
Its student body is predominantly White (87% of enrollment) (diversity index 25/100).
Counselor coverage is strong, about 174 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 33.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Dunklin R-V also operates Pevely Elem. (714 students) and Herculaneum High (466 students) alongside Senn-Thomas Middle.
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
Senn-Thomas Middle on the metrics families compare, against Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.8:1 | ▲ 23% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 39.0% | ▼ 15% | 46.1% | 51.7% |
| Enrollment | 347 | top 44% | - | - |
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 86.5% of enrollment.
Simpson diversity index - at 24.6, Senn-Thomas Middle is less mixed than the Missouri school average of 31.0.
District-wide per-pupil expenditure for Dunklin R-V, which includes Senn-Thomas Middle.
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 |
|---|---|---|---|
| Pevely Elem. | Larger | Similar economic need | Lower S:T ratio |
| Herculaneum High | Larger | Similar economic need | Similar S:T ratio |
| Taylor Early Childhood | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Senn-Thomas Middle'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 Senn-Thomas Middle'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.
Senn-Thomas Middle has 347 students enrolled. It is a middle school in Herculaneum, MO.
The student-teacher ratio at Senn-Thomas Middle is 15.8:1, which is 23% higher than the Missouri average of 12.8:1 and 1% higher than the national average of 15.7:1.
39.0% of students at Senn-Thomas Middle are eligible for free lunch, compared to the Missouri average of 46.1%.
The largest demographic group at Senn-Thomas Middle is White at 86.5% of enrollment, in Herculaneum, MO.
Senn-Thomas Middle has a Resource Investment Index of 47/100 (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).
By Resource Investment Index, Senn-Thomas Middle ranks #1 of 3 public schools in Herculaneum, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Herculaneum on the city page.
Senn-Thomas Middle earns 47/100 on the Resource Investment Index, with class sizes larger than 86% of Missouri 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.
Besides Senn-Thomas Middle, Dunklin R-V also operates Pevely Elem. (714 students), Herculaneum High (466 students), and Taylor Early Childhood (170 students). See the Dunklin R-V 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, “Senn-Thomas Middle, Herculaneum 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/senn-thomas-middle-mo
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