Enrollment
1,000
California · 2024-25 NCES data
Middle school (grades 6-8) · Rialto, CA
Federal NCES profile for Warren F. Frisbie Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
The verdict
Warren F. Frisbie Middle earns 29/100 on the Resource Investment Index, with class sizes larger than 79% of California schools. It is also less racially and ethnically mixed than most California schools.
Warren F. Frisbie Middle has class sizes larger than 79% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Warren F. Frisbie Middle ranks #3 of 4 middle schools in Rialto, CA.
NCES ID 063237004991 Verify on NCES CCD record →
Enrollment
1,000
California · 2024-25 NCES data
Teachers (FTE)
40.0
Federal CCD staff survey
Students per teacher
25:1
vs 21.5:1 California avg
+16% vs state
Free-lunch eligible
75.8%
vs 55.5% California avg
+37% vs state
How Warren F. Frisbie Middle compares with California and U.S. medians
Larger classes than state median
25:1 - 3.5 above the California state median of 21.5:1, indicating larger average class loads than typical schools in the state.
Warren F. Frisbie Middle is a high-poverty, large middle school in Rialto, California, enrolling 1,000 students.
Class loads run somewhat heavier than typical: 25:1 puts it in the larger third of California schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 75.8% of students eligible for free meals.
Enrollment of 1,000 puts it in the larger third of California schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 973 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #309.
Its student body is predominantly Hispanic or Latino (90% of enrollment), among the less diverse in the state (diversity index 18/100).
Counselor availability sits well past the ASCA benchmark, roughly 333 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 35.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Rialto's middle schools, it stands alongside Rialto Middle (1,017 students): Warren F. Frisbie Middle is smaller than that campus by headcount and runs heavier classes (25:1 vs 23.1:1).
Rialto Unified also operates Rialto High (2,623 students) and Eisenhower High (2,075 students) alongside Warren F. Frisbie 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
Warren F. Frisbie Middle on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 25:1 | ▲ 16% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 75.8% | ▲ 37% | 55.5% | 51.7% |
| Enrollment | 1,000 | top 11% | - | - |
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 90.3% of enrollment.
Simpson diversity index - at 17.9, Warren F. Frisbie Middle is less mixed than the California school average of 46.0.
District-wide per-pupil expenditure for Rialto Unified, which includes Warren F. Frisbie 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 |
|---|---|---|---|
| Rialto High | Larger | Similar economic need | Lower 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 | Similar S:T ratio |
| Rialto Middle | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Warren F. Frisbie Middle's own figures; each column derives from NCES Common Core of Data.
3 comparable middle schools (grades 6-8) 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 Warren F. Frisbie 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.
Warren F. Frisbie Middle has 1,000 students enrolled. It is a middle school in Rialto, CA.
The student-teacher ratio at Warren F. Frisbie Middle is 25:1, which is 16% higher than the California average of 21.5:1 and 59% higher than the national average of 15.7:1.
75.8% of students at Warren F. Frisbie Middle are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Warren F. Frisbie Middle is Hispanic or Latino at 90.3% of enrollment, in Rialto, CA.
Warren F. Frisbie Middle has a Resource Investment Index of 29/100 (lower 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 F. Frisbie Middle ranks #3 of 4 middle 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 middle schools in Rialto on the city page.
Warren F. Frisbie Middle earns 29/100 on the Resource Investment Index, with class sizes larger than 79% of California schools. 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 Warren F. Frisbie Middle, 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, “Warren F. Frisbie Middle, 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/warren-f-frisbie-middle-ca
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