Enrollment
465
California · 2024-25 NCES data
Elementary school (grades K-5) · San Ramon, CA
Federal NCES profile for Neil a. Armstrong Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
The verdict
Neil a. Armstrong Elementary earns 41/100 on the Resource Investment Index, with class sizes near the California median.
Neil a. Armstrong Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Neil a. Armstrong Elementary ranks #2 of 12 elementary schools in San Ramon, CA.
NCES ID 063513005954 Verify on NCES CCD record →
Enrollment
465
California · 2024-25 NCES data
Teachers (FTE)
21.0
Federal CCD staff survey
Students per teacher
22.1:1
vs 21.5:1 California avg
+3% vs state
Free-lunch eligible
7.4%
vs 55.5% California avg
-87% vs state
How Neil a. Armstrong Elementary compares with California and U.S. medians
Slightly above state median
22.1:1 - 0.6 above the California state median of 21.5:1, indicating larger average class loads than typical schools in the state.
Neil a. Armstrong Elementary is a lower-poverty, mid-sized elementary school in San Ramon, California, enrolling 465 students.
At 22.1:1, 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.
Comparatively few students face economic hardship here, 7.4% free-meal eligibility runs 87% below the California average.
With 465 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 710 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #230.
Its student body is led by Asian (53%) and White (27%) (diversity index 63/100).
Counselor access is stretched at roughly 930 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 7.1% of students were chronically absent, below the typical post-pandemic national figure.
Among San Ramon's elementary schools, it stands alongside Quail Run Elementary (744 students): Neil a. Armstrong Elementary is smaller than that campus by headcount and runs heavier classes (22.1:1 vs 20.1:1).
San Ramon Valley Unified also operates Dougherty Valley High (3,039 students) and California High (2,894 students) alongside Neil a. Armstrong 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
Neil a. Armstrong 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 | 22.1:1 | ▲ 3% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 7.4% | ▼ 87% | 55.5% | 51.7% |
| Enrollment | 465 | top 50% | - | - |
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 53.3% of enrollment.
Simpson diversity index - at 62.5, Neil a. Armstrong Elementary is more mixed than the California school average of 46.0.
District-wide per-pupil expenditure for San Ramon Valley Unified, which includes Neil a. Armstrong 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 |
|---|---|---|---|
| Dougherty Valley High | Larger | Similar economic need | Higher S:T ratio |
| California High | Larger | Similar economic need | Higher S:T ratio |
| Monte Vista High | Larger | Similar economic need | Similar S:T ratio |
| San Ramon Valley High | Larger | Similar economic need | Higher S:T ratio |
| Windemere Ranch Middle | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Neil a. Armstrong 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 Neil a. Armstrong 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.
Neil a. Armstrong Elementary has 465 students enrolled. It is an elementary school in San Ramon, CA.
The student-teacher ratio at Neil a. Armstrong Elementary is 22.1:1, which is 3% higher than the California average of 21.5:1 and 41% higher than the national average of 15.7:1.
7.4% of students at Neil a. Armstrong Elementary are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Neil a. Armstrong Elementary is Asian at 53.3% of enrollment, in San Ramon, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 62.5/100.
Neil a. Armstrong Elementary has a Resource Investment Index of 41/100 (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, Neil a. Armstrong Elementary ranks #2 of 12 elementary schools in San Ramon, 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 San Ramon on the city page.
Neil a. Armstrong Elementary earns 41/100 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 Neil a. Armstrong Elementary, San Ramon Valley Unified also operates Dougherty Valley High (3,039 students), California High (2,894 students), and Monte Vista High (2,042 students). See the San Ramon 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, “Neil a. Armstrong Elementary, San Ramon 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/neil-a-armstrong-elementary-ca
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