Enrollment
490
California · 2024-25 NCES data
Elementary school (grades K-5) · Winnetka, CA
Federal NCES profile for Stanley Mosk Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 31/100.
The verdict
Stanley Mosk Elementary earns 31/100 on the Resource Investment Index, with class sizes near the California median.
Stanley Mosk Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Stanley Mosk Elementary ranks #3 of 3 elementary schools in Winnetka, CA.
NCES ID 062271012671 Verify on NCES CCD record →
Enrollment
490
California · 2024-25 NCES data
Teachers (FTE)
23.0
Federal CCD staff survey
Students per teacher
21.3:1
vs 21.5:1 California avg
-1% vs state
Free-lunch eligible
83.2%
vs 55.5% California avg
+50% vs state
How Stanley Mosk Elementary compares with California and U.S. medians
At or below state median
21.3:1 - 0.2 below the California state median of 21.5:1, indicating smaller average class loads than typical schools in the state.
Stanley Mosk Elementary is a high-poverty, mid-sized elementary school in Winnetka, California, enrolling 490 students.
At 21.3:1, its student-teacher ratio sits close to the California median, within a few percentage points of the 21.5:1 state norm, neither notably crowded nor notably small.
Economic need is high: 83.2% of students qualify for free meals, 50% above the California average, a Title I-weighted population that federal funding formulas prioritise.
With 490 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 1,981 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #552.
Its student body is led by Hispanic or Latino (71%) and White (12%) (diversity index 47/100).
Chronic absenteeism is elevated: 36.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Los Angeles Unified spends $21,940 per pupil, 33% above the California average, a better-resourced district than most.
Its district draws 19.2% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Winnetka's elementary schools, it stands alongside Sunny Brae Avenue Elementary (448 students): Stanley Mosk Elementary is larger than that campus by headcount and runs heavier classes (21.3:1 vs 18.7:1).
Los Angeles Unified also operates Grover Cleveland Charter High (2,719 students) and North Hollywood Senior High (2,444 students) alongside Stanley Mosk 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
Stanley Mosk 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 | 21.3:1 | ▼ 1% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 83.2% | ▲ 50% | 55.5% | 51.7% |
| Enrollment | 490 | top 47% | - | - |
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 70.8% of enrollment.
Simpson diversity index - at 47.4, Stanley Mosk Elementary is about as mixed as the California school average of 46.0.
District-wide per-pupil expenditure for Los Angeles Unified, which includes Stanley Mosk 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 |
|---|---|---|---|
| Grover Cleveland Charter High | Larger | Lower economic need | Higher S:T ratio |
| North Hollywood Senior High | Larger | Lower economic need | Similar S:T ratio |
| Phineas Banning Senior High | Larger | Similar economic need | Lower S:T ratio |
| San Pedro Senior High | Larger | Lower economic need | Similar S:T ratio |
| Venice Senior High | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Stanley Mosk Elementary's own figures; each column derives from NCES Common Core of Data.
2 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 Stanley Mosk 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.
Stanley Mosk Elementary has 490 students enrolled. It is an elementary school in Winnetka, CA.
The student-teacher ratio at Stanley Mosk Elementary is 21.3:1, which is 1% lower than the California average of 21.5:1 and 36% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
83.2% of students at Stanley Mosk Elementary are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Stanley Mosk Elementary is Hispanic or Latino at 70.8% of enrollment, in Winnetka, CA.
Stanley Mosk Elementary has a Resource Investment Index of 31/100 (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, Stanley Mosk Elementary ranks #3 of 3 elementary schools in Winnetka, 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 Winnetka on the city page.
Stanley Mosk Elementary earns 31/100 on the Resource Investment Index, with class sizes near the California 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 Stanley Mosk Elementary, Los Angeles Unified also operates Grover Cleveland Charter High (2,719 students), North Hollywood Senior High (2,444 students), and Phineas Banning Senior High (2,422 students). See the Los Angeles 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, “Stanley Mosk Elementary, Winnetka 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/stanley-mosk-elementary-ca
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