Enrollment
444
Missouri · 2024-25 NCES data
Elementary school (grades K-5) · St Peters, MO
Federal NCES profile for Mid Rivers Elem., including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 54/100.
The verdict
Mid Rivers Elem. earns 54/100 on the Resource Investment Index, with class sizes smaller than 75% of Missouri schools.
Mid Rivers Elem. has class sizes smaller than 75% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Mid Rivers Elem. ranks #4 of 7 elementary schools in St Peters, MO.
NCES ID 290837002038 Verify on NCES CCD record →
Enrollment
444
Missouri · 2024-25 NCES data
Teachers (FTE)
41.0
Federal CCD staff survey
Students per teacher
10.8:1
vs 12.8:1 Missouri avg
-16% vs state
Free-lunch eligible
12.6%
vs 46.1% Missouri avg
-73% vs state
How Mid Rivers Elem. compares with Missouri and U.S. medians
Smaller classes than state median
10.8:1 - 2.0 below the Missouri state median of 12.8:1, indicating smaller average class loads than typical schools in the state.
Mid Rivers Elem. is a lower-poverty, mid-sized elementary school in St Peters, Missouri, enrolling 444 students.
Class sizes run a bit leaner than typical: 10.8:1 puts it in the smaller third of Missouri schools by student-teacher ratio.
Comparatively few students face economic hardship here, 12.6% free-meal eligibility runs 73% below the Missouri average.
Enrollment of 444 puts it in the larger third of Missouri schools by headcount.
Its Resource Investment Index lands in the upper third of 2,313 scored Missouri schools.
Against 310 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #101.
Its student body is led by White (77%) and African American (7%) (diversity index 40/100).
Counselor access is stretched at roughly 444 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 9.0% of students were chronically absent, below the typical post-pandemic national figure.
Ft. Zumwalt R-Ii also operates Ft. Zumwalt West High (1,643 students) and Ft. Zumwalt North High (1,538 students) alongside Mid Rivers 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
Mid Rivers 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 | 10.8:1 | ▼ 16% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 12.6% | ▼ 73% | 46.1% | 51.7% |
| Enrollment | 444 | top 28% | - | - |
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 76.6% of enrollment.
Simpson diversity index - at 39.9, Mid Rivers Elem. is more mixed than the Missouri school average of 31.0.
District-wide per-pupil expenditure for Ft. Zumwalt R-Ii, which includes Mid Rivers 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 |
|---|---|---|---|
| Ft. Zumwalt West High | Larger | Similar economic need | Higher S:T ratio |
| Ft. Zumwalt North High | Larger | Similar economic need | Higher S:T ratio |
| Ft. Zumwalt South High | Larger | Similar economic need | Higher S:T ratio |
| Ft. Zumwalt East High | Larger | Similar economic need | Higher S:T ratio |
| Ft. Zuwmalt West Middle | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Mid Rivers 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 Mid Rivers 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.
Mid Rivers Elem. has 444 students enrolled. It is an elementary school in St Peters, MO.
The student-teacher ratio at Mid Rivers Elem. is 10.8:1, which is 16% lower than the Missouri average of 12.8:1 and 31% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
12.6% of students at Mid Rivers Elem. are eligible for free lunch, compared to the Missouri average of 46.1%.
The largest demographic group at Mid Rivers Elem. is White at 76.6% of enrollment, in St Peters, MO.
Mid Rivers Elem. has a Resource Investment Index of 54/100 (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, Mid Rivers Elem. ranks #4 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.
Mid Rivers Elem. earns 54/100 on the Resource Investment Index, with class sizes smaller than 75% 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 Mid Rivers 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.
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, “Mid Rivers 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/mid-rivers-elem-mo
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