Enrollment
461
California · 2024-25 NCES data
Elementary school (grades K-5) · Rialto, CA
Federal NCES profile for Winn a. Myers Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 30/100.
The verdict
Winn a. Myers Elementary earns 30/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most California schools.
Winn a. Myers Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Winn a. Myers Elementary ranks #6 of 16 elementary schools in Rialto, CA.
NCES ID 063237004996 Verify on NCES CCD record →
Enrollment
461
California · 2024-25 NCES data
Teachers (FTE)
20.0
Federal CCD staff survey
Students per teacher
23.1:1
vs 21.5:1 California avg
+7% vs state
Free-lunch eligible
78.6%
vs 55.5% California avg
+42% vs state
How Winn a. Myers Elementary compares with California and U.S. medians
Slightly above state median
23.1:1 - 1.6 above the California state median of 21.5:1, indicating larger average class loads than typical schools in the state.
Winn a. Myers Elementary is a high-poverty, mid-sized elementary school in Rialto, California, enrolling 461 students.
Class loads run somewhat heavier than typical: 23.1:1 puts it in the larger third of California schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 78.6% of students eligible for free meals.
With 461 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 2,103 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #665.
Its student body is predominantly Hispanic or Latino (91% of enrollment), among the less diverse in the state (diversity index 18/100).
Chronic absenteeism is elevated: 34.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Rialto's elementary schools, it stands alongside Charlotte N. Werner Elementary (739 students): Winn a. Myers Elementary is smaller than that campus by headcount and runs leaner classes (23.1:1 vs 23.8:1).
Rialto Unified also operates Rialto High (2,623 students) and Eisenhower High (2,075 students) alongside Winn a. Myers Elementary.
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
Winn a. Myers Elementary on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 23.1:1 | ▲ 7% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 78.6% | ▲ 42% | 55.5% | 51.7% |
| Enrollment | 461 | top 51% | - | - |
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: Hispanic or Latino at 90.5% of enrollment.
Simpson diversity index - at 17.7, Winn a. Myers Elementary is less mixed than the California school average of 46.0.
District-wide per-pupil expenditure for Rialto Unified, which includes Winn a. Myers Elementary.
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 |
|---|---|---|---|
| Rialto High | Larger | Similar economic need | Similar S:T ratio |
| Eisenhower High | Larger | Similar economic need | Lower S:T ratio |
| Wilmer Amina Carter High | Larger | Lower economic need | Lower S:T ratio |
| William G. Jehue Middle | Larger | Similar economic need | Higher S:T ratio |
| Rialto Middle | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Winn a. Myers Elementary's own figures; each column derives from NCES Common Core of Data.
6 comparable elementary schools (grades K-5) serving the same city.
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Winn a. Myers Elementary'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.
Winn a. Myers Elementary has 461 students enrolled. It is an elementary school in Rialto, CA.
The student-teacher ratio at Winn a. Myers Elementary is 23.1:1, which is 7% higher than the California average of 21.5:1 and 47% higher than the national average of 15.7:1.
78.6% of students at Winn a. Myers Elementary are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Winn a. Myers Elementary is Hispanic or Latino at 90.5% of enrollment, in Rialto, CA.
Winn a. Myers Elementary has a Resource Investment Index of 30/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Winn a. Myers Elementary ranks #6 of 16 elementary schools in Rialto, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Rialto on the city page.
Winn a. Myers Elementary earns 30/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most California 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 Winn a. Myers Elementary, Rialto Unified also operates Rialto High (2,623 students), Eisenhower High (2,075 students), and Wilmer Amina Carter High (1,951 students). See the Rialto Unified 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, “Winn a. Myers Elementary, Rialto CA.” 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/winn-a-myers-elementary-ca
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