Enrollment
729
Missouri · 2024-25 NCES data
Elementary school (grades K-5) · St Peters, MO
Federal NCES profile for Warren Elem., including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 64/100.
The verdict
Warren Elem. earns 64/100 on the Resource Investment Index, with class sizes near the Missouri median.
Warren Elem. has class sizes near the Missouri median. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Warren Elem. ranks #1 of 7 elementary schools in St Peters, MO.
NCES ID 292895002822 Verify on NCES CCD record →
Enrollment
729
Missouri · 2024-25 NCES data
Teachers (FTE)
57.0
Federal CCD staff survey
Students per teacher
12.8:1
vs 12.8:1 Missouri avg
+0% vs state
Free-lunch eligible
6.3%
vs 46.1% Missouri avg
-86% vs state
How Warren Elem. compares with Missouri and U.S. medians
At or below state median
12.8:1 - 0.0 below the Missouri state median of 12.8:1, indicating smaller average class loads than typical schools in the state.
Warren Elem. is a lower-poverty, large elementary school in St Peters, Missouri, enrolling 729 students.
At 12.8:1, 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.
Comparatively few students face economic hardship here, 6.3% free-meal eligibility runs 86% below the Missouri average.
By headcount it is one of the larger campuses in Missouri, bigger than 90% of state schools at 729 students.
Its Resource Investment Index outscores 95% of the 2,313 Missouri schools with a score on record, a top-tier result on this measure.
Among 148 similarly sized, similarly resourced-need Missouri schools statewide, it ranks #2, a top-tier result once campus size and economic need are matched.
Its student body is led by White (76%) and Hispanic or Latino (6%) (diversity index 41/100).
Counselor coverage is strong, about 208 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance holds up well here: only 8.6% of students were chronically absent, below the typical post-pandemic national figure.
Francis Howell R-Iii also operates Francis Howell High (1,843 students) and Francis Howell Central High (1,750 students) alongside Warren 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
Warren 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 | 12.8:1 | ▼ 0% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 6.3% | ▼ 86% | 46.1% | 51.7% |
| Enrollment | 729 | top 10% | - | - |
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 75.6% of enrollment.
Simpson diversity index - at 41.4, Warren Elem. is more mixed than the Missouri school average of 31.0.
District-wide per-pupil expenditure for Francis Howell R-Iii, which includes Warren Elem..
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 |
|---|---|---|---|
| Francis Howell High | Larger | Similar economic need | Higher S:T ratio |
| Francis Howell Central High | Larger | Similar economic need | Higher S:T ratio |
| Francis Howell North High | Larger | Similar economic need | Higher S:T ratio |
| Fairmount Elem. | Larger | Similar economic need | Similar S:T ratio |
| Central Elem. | Similar size | Higher economic need | Similar S:T ratio |
Comparisons are relative to Warren Elem.'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 Warren Elem.'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.
Warren Elem. has 729 students enrolled. It is an elementary school in St Peters, MO.
The student-teacher ratio at Warren Elem. is 12.8:1, which is 0% higher than the Missouri average of 12.8:1 and 18% lower than the national average of 15.7:1.
6.3% of students at Warren Elem. are eligible for free lunch, compared to the Missouri average of 46.1%.
The largest demographic group at Warren Elem. is White at 75.6% of enrollment, in St Peters, MO.
Warren Elem. has a Resource Investment Index of 64/100 (higher 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, Warren Elem. ranks #1 of 7 elementary schools in St Peters, 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 St Peters on the city page.
Warren Elem. earns 64/100 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 Warren Elem., Francis Howell R-Iii also operates Francis Howell High (1,843 students), Francis Howell Central High (1,750 students), and Francis Howell North High (1,716 students). See the Francis Howell R-Iii 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, “Warren Elem., St Peters 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/warren-elem-mo
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