Enrollment
1,243
Missouri · 2024-25 NCES data
Middle school (grades 6-8) · O'fallon, MO
Federal NCES profile for Frontier Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
The verdict
Frontier Middle earns 42/100 on the Resource Investment Index, with class sizes larger than 81% of Missouri schools. It is also one of the largest schools in Missouri.
Frontier Middle has class sizes larger than 81% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Frontier Middle ranks #3 of 3 middle schools in O'fallon, MO.
NCES ID 293165002869 Verify on NCES CCD record →
Enrollment
1,243
Missouri · 2024-25 NCES data
Teachers (FTE)
82.0
Federal CCD staff survey
Students per teacher
15.2:1
vs 12.8:1 Missouri avg
+19% vs state
Free-lunch eligible
8.4%
vs 46.1% Missouri avg
-82% vs state
How Frontier Middle compares with Missouri and U.S. medians
Slightly above state median
15.2:1 - 2.4 above the Missouri state median of 12.8:1, indicating larger average class loads than typical schools in the state.
Frontier Middle is a lower-poverty, large middle school in O'fallon, Missouri, enrolling 1,243 students.
Class loads run somewhat heavier than typical: 15.2:1 puts it in the larger third of Missouri schools by student-teacher ratio.
Comparatively few students face economic hardship here, 8.4% free-meal eligibility runs 82% below the Missouri average.
By headcount it is one of the larger campuses in Missouri, bigger than 96% of state schools at 1,243 students.
Its Resource Investment Index lands in the lower third of 2,313 scored Missouri schools.
Among 80 similarly sized, similarly resourced-need Missouri schools statewide, it ranks #58, in the lower tier once campus size and economic need are matched.
Its student body is led by White (74%) and African American (8%) (diversity index 43/100).
Counselor access is stretched at roughly 622 students per counselor, well above the ASCA-recommended 250:1 ceiling.
16.2% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Wentzville R-Iv also operates Liberty High School (1,647 students) and Timberland High (1,525 students) alongside Frontier 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
Frontier 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 | 15.2:1 | ▲ 19% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 8.4% | ▼ 82% | 46.1% | 51.7% |
| Enrollment | 1,243 | top 4% | - | - |
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 74.3% of enrollment.
Simpson diversity index - at 43.1, Frontier Middle is more mixed than the Missouri school average of 31.0.
District-wide per-pupil expenditure for Wentzville R-Iv, which includes Frontier 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 |
|---|---|---|---|
| Liberty High School | Larger | Similar economic need | Higher S:T ratio |
| Timberland High | Similar size | Similar economic need | Similar S:T ratio |
| North Point High School | Similar size | Similar economic need | Higher S:T ratio |
| Wentzville South Middle | Similar size | Similar economic need | Similar S:T ratio |
| Heritage Intermediate | Similar size | Higher economic need | Higher S:T ratio |
Comparisons are relative to Frontier 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 Frontier 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.
Frontier Middle has 1,243 students enrolled. It is a middle school in O'fallon, MO.
The student-teacher ratio at Frontier Middle is 15.2:1, which is 19% higher than the Missouri average of 12.8:1 and 3% lower than the national average of 15.7:1.
8.4% of students at Frontier Middle are eligible for free lunch, compared to the Missouri average of 46.1%.
The largest demographic group at Frontier Middle is White at 74.3% of enrollment, in O'fallon, MO.
Frontier Middle has a Resource Investment Index of 42/100 (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, Frontier Middle ranks #3 of 3 middle 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 middle schools in O'fallon on the city page.
Frontier Middle earns 42/100 on the Resource Investment Index, with class sizes larger than 81% of Missouri schools. It is also one of the largest schools in Missouri. 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 Frontier Middle, Wentzville R-Iv also operates Liberty High School (1,647 students), Timberland High (1,525 students), and North Point High School (1,433 students). See the Wentzville R-Iv 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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PlainSchools, “Frontier Middle, O'fallon 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/frontier-middle-mo
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