Enrollment
696
California · 2024-25 NCES data
Elementary school (grades K-5) · Diamond Bar, CA
Federal NCES profile for Quail Summit Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 26/100.
The verdict
Quail Summit Elementary earns 26/100 on the Resource Investment Index, with class sizes larger than 92% of California schools.
Quail Summit Elementary has class sizes larger than 92% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Quail Summit Elementary ranks #6 of 7 elementary schools in Diamond Bar, CA.
NCES ID 064128009205 Verify on NCES CCD record →
Enrollment
696
California · 2024-25 NCES data
Teachers (FTE)
25.0
Federal CCD staff survey
Students per teacher
27.8:1
vs 21.5:1 California avg
+29% vs state
Free-lunch eligible
24.2%
vs 55.5% California avg
-56% vs state
How Quail Summit Elementary compares with California and U.S. medians
Larger classes than state median
27.8:1 - 6.3 above the California state median of 21.5:1, indicating larger average class loads than typical schools in the state.
Quail Summit Elementary is a mid-sized elementary school in Diamond Bar, California, enrolling 696 students.
Class loads run heavy: 27.8:1 is larger than about 92% of California schools and 29% above the 21.5:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 24.2% of students eligible for free meals.
Enrollment of 696 puts it in the larger third of California schools by headcount.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 1,304 similarly sized, similarly resourced-need California schools statewide, it ranks #973, in the lower tier once campus size and economic need are matched.
Its student body is led by Asian (74%) and Hispanic or Latino (16%) (diversity index 42/100).
Counselor access is stretched at roughly 696 students per counselor, well above the ASCA-recommended 250:1 ceiling.
10.2% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Walnut Valley Unified spends $12,979 per pupil, 21% below the California average, a leaner-resourced district than most.
Among Diamond Bar's elementary schools, it stands alongside Evergreen Elementary (709 students): Quail Summit Elementary is smaller than that campus by headcount and runs heavier classes (27.8:1 vs 25.3:1).
Walnut Valley Unified also operates Diamond Bar High (2,563 students) and Walnut High (2,148 students) alongside Quail Summit 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
Quail Summit 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 | 27.8:1 | ▲ 29% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 24.2% | ▼ 56% | 55.5% | 51.7% |
| Enrollment | 696 | top 24% | - | - |
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: Asian at 74.3% of enrollment.
Simpson diversity index - at 41.8, Quail Summit Elementary is less mixed than the California school average of 46.0.
District-wide per-pupil expenditure for Walnut Valley Unified, which includes Quail Summit 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 |
|---|---|---|---|
| Diamond Bar High | Larger | Similar economic need | Similar S:T ratio |
| Walnut High | Larger | Similar economic need | Lower S:T ratio |
| Chaparral Middle | Larger | Similar economic need | Higher S:T ratio |
| Suzanne Middle | Larger | Similar economic need | Similar S:T ratio |
| South Pointe Middle | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Quail Summit 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 Quail Summit 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.
Quail Summit Elementary has 696 students enrolled. It is an elementary school in Diamond Bar, CA.
The student-teacher ratio at Quail Summit Elementary is 27.8:1, which is 29% higher than the California average of 21.5:1 and 77% higher than the national average of 15.7:1.
24.2% of students at Quail Summit Elementary are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Quail Summit Elementary is Asian at 74.3% of enrollment, in Diamond Bar, CA.
Quail Summit Elementary has a Resource Investment Index of 26/100 (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, Quail Summit Elementary ranks #6 of 7 elementary schools in Diamond Bar, 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 Diamond Bar on the city page.
Quail Summit Elementary earns 26/100 on the Resource Investment Index, with class sizes larger than 92% of 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 Quail Summit Elementary, Walnut Valley Unified also operates Diamond Bar High (2,563 students), Walnut High (2,148 students), and Chaparral Middle (1,349 students). See the Walnut Valley 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, “Quail Summit Elementary, Diamond Bar 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/quail-summit-elementary-ca
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