Enrollment
809
Missouri · 2024-25 NCES data
Middle school (grades 6-8) · Liberty, MO
Federal NCES profile for South Valley Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
The verdict
South Valley Middle earns 45/100 on the Resource Investment Index, with class sizes larger than 77% of Missouri schools.
South Valley Middle has class sizes larger than 77% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, South Valley Middle ranks #4 of 4 middle schools in Liberty, MO.
Enrollment
809
Missouri · 2024-25 NCES data
Teachers (FTE)
55.0
Federal CCD staff survey
Students per teacher
14.7:1
vs 12.8:1 Missouri avg
+15% vs state
Free-lunch eligible
12.3%
vs 46.1% Missouri avg
-73% vs state
How South Valley Middle compares with Missouri and U.S. medians
Slightly above state median
14.7:1 - 1.9 above the Missouri state median of 12.8:1, indicating larger average class loads than typical schools in the state.
South Valley Middle is a lower-poverty, large middle school in Liberty, Missouri, enrolling 809 students.
Class loads run somewhat heavier than typical: 14.7:1 puts it in the larger third of Missouri schools by student-teacher ratio.
Comparatively few students face economic hardship here, 12.3% free-meal eligibility runs 73% below the Missouri average.
By headcount it is one of the larger campuses in Missouri, bigger than 93% of state schools at 809 students.
Its Resource Investment Index lands in the lower third of 2,313 scored Missouri schools.
Among 183 similarly sized, similarly resourced-need Missouri schools statewide, it ranks #137, in the lower tier once campus size and economic need are matched.
Its student body is led by White (74%) and Hispanic or Latino (10%) (diversity index 44/100).
Counselor access is stretched at roughly 405 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance runs somewhat below the norm, with 20.8% of students chronically absent per the 2021-22 civil-rights collection.
Liberty 53 also operates Liberty North High School (2,262 students) and Liberty High (1,842 students) alongside South Valley 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
South Valley 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 | 14.7:1 | ▲ 15% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 12.3% | ▼ 73% | 46.1% | 51.7% |
| Enrollment | 809 | top 7% | - | - |
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 73.5% of enrollment.
Simpson diversity index - at 44.0, South Valley Middle is more mixed than the Missouri school average of 31.0.
District-wide per-pupil expenditure for Liberty 53, which includes South Valley 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 North High School | Larger | Similar economic need | Higher S:T ratio |
| Liberty High | Larger | Similar economic need | Similar S:T ratio |
| Shoal Creek Elem. | Similar size | Similar economic need | Similar S:T ratio |
| Heritage Middle School | Similar size | Similar economic need | Similar S:T ratio |
| Discovery Middle School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to South Valley 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 South Valley 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.
South Valley Middle has 809 students enrolled. It is a middle school in Liberty, MO.
The student-teacher ratio at South Valley Middle is 14.7:1, which is 15% higher than the Missouri average of 12.8:1 and 6% lower than the national average of 15.7:1.
12.3% of students at South Valley Middle are eligible for free lunch, compared to the Missouri average of 46.1%.
The largest demographic group at South Valley Middle is White at 73.5% of enrollment, in Liberty, MO.
South Valley Middle has a Resource Investment Index of 45/100 (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, South Valley Middle ranks #4 of 4 middle schools in Liberty, 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 Liberty on the city page.
South Valley Middle earns 45/100 on the Resource Investment Index, with class sizes larger than 77% 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 South Valley Middle, Liberty 53 also operates Liberty North High School (2,262 students), Liberty High (1,842 students), and Shoal Creek Elem. (795 students). See the Liberty 53 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, “South Valley Middle, Liberty 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/south-valley-middle-mo
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