Enrollment
489
California · 2024-25 NCES data
Elementary school (grades K-5) · Cupertino, CA
C. B. Eaton Elementary
Federal NCES profile for C. B. Eaton Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
2024-25 NCES dataElementary school (grades K-5)NCES 061029007787
👥 S:T ratio 7
🌟 Gifted program 30
📋 Attendance 84
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
C. B. Eaton Elementary earns 40/100 on the Resource Investment Index, with class sizes near the California median.
- #2 of 7
- elementary schools in Cupertino · Resource Index
- 40
- Resource Index · Typical
- 23.3:1
- students per teacher
- 6.2%
- free-lunch eligible
C. B. Eaton Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, C. B. Eaton Elementary ranks #2 of 7 elementary schools in Cupertino, CA.
School address
District: Cupertino Union · California
NCES ID 061029007787 Verify on NCES CCD record →
Teachers (FTE)
21.0
Federal CCD staff survey
Students per teacher
23.3:1
vs 21.5:1 California avg
+8% vs state
Free-lunch eligible
6.2%
vs 55.5% California avg
-89% vs state
Student-teacher ratio in context
How C. B. Eaton Elementary compares with California and U.S. medians
What stands out at C. B. Eaton Elementary
C. B. Eaton Elementary is a lower-poverty, mid-sized elementary school in Cupertino, California, enrolling 489 students.
Class loads run somewhat heavier than typical: 23.3:1 puts it in the larger third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 6.2% free-meal eligibility runs 89% below the California average.
With 489 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 688 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #237.
Its student body is led by Asian (74%) and Two or More (11%) (diversity index 42/100).
Attendance holds up well here: only 6.3% of students were chronically absent, below the typical post-pandemic national figure.
Among Cupertino's elementary schools, it stands alongside Abraham Lincoln Elementary (662 students): C. B. Eaton Elementary is smaller than that campus by headcount and runs leaner classes (23.3:1 vs 25.5:1).
Cupertino Union also operates Cupertino Middle (1,067 students) and Joaquin Miller Middle (1,067 students) alongside C. B. Eaton 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
How C. B. Eaton Elementary compares
C. B. Eaton 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 | 23.3:1 | ▲ 8% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 6.2% | ▼ 89% | 55.5% | 51.7% |
| Enrollment | 489 | top 47% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23.3:1
Leaner classes than 8% of US schools, heavier class loads than most.
489
Bigger than 60% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
6.2%
free-lunch eligible
- 89% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
23.3:1
students per teacher
- 8% above state mean
Top 65% in California - lower ratio than 35% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
6.3%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$14,632
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
Asian 74.4%
Two or More 10.8%
White 10.0%
Hispanic or Latino 3.9%
African American 0.6%
American Indian / Alaska Native 0.2%
Largest group: Asian at 74.4% of enrollment.
Student-body diversity index 42.3/100
Simpson diversity index - at 42.3, C. B. Eaton Elementary is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Cupertino Union, which includes C. B. Eaton Elementary.
$14,632
Per student
-11%
vs California
Avg $16,509
-12%
vs U.S.
Avg $16,593
Revenue mix
Local 60.6%
State 33.6%
Federal 5.9%
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.
How C. B. Eaton Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Cupertino Middle | Larger | Similar economic need | Lower S:T ratio |
| Joaquin Miller Middle | Larger | Similar economic need | Lower S:T ratio |
| John F. Kennedy Middle | Larger | Similar economic need | Similar S:T ratio |
| Sam H. Lawson Middle | Larger | Similar economic need | Lower S:T ratio |
| Louis E. Stocklmeir Elementary | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to C. B. Eaton Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,067
- Students per teacher
- 20.1:1
- Resource Index
- 33/100
- Enrollment
- 1,067
- Students per teacher
- 21.8:1
- Resource Index
- 34/100
- Enrollment
- 880
- Students per teacher
- 22:1
- Resource Index
- 36/100
- Enrollment
- 841
- Students per teacher
- 19.6:1
- Resource Index
- 38/100
- Enrollment
- 840
- Students per teacher
- 25.5:1
- Resource Index
- 32/100
Similar elementary schools in Cupertino
6 comparable elementary schools (grades K-5) serving the same city.
Abraham Lincoln Elementary
Standard public school
662 students 25.5:1 students per teacher
William Faria Elementary
Standard public school
614 students 24.6:1 students per teacher
L. P. Collins Elementary
Standard public school
498 students 27.7:1 students per teacher
Garden Gate Elementary
Standard public school
471 students 21.4:1 students per teacher
Stevens Creek Elementary
Standard public school
407 students 20.4:1 students per teacher
D. J. Sedgwick Elementary
Standard public school
407 students 25.4:1 students per teacher
Similar elementary schools statewide
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.
Similar enrollment (~489 students)
Similar student-teacher ratio (~23.3:1)
Next steps
Verify locally before acting on C. B. Eaton Elementary's federal record.
- Compare C. B. Eaton Elementary against another school. Compare schools
- Cupertino Union's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about C. B. Eaton Elementary
How many students attend C. B. Eaton Elementary?
C. B. Eaton Elementary has 489 students enrolled. It is an elementary school in Cupertino, CA.
What is the student-teacher ratio at C. B. Eaton Elementary?
The student-teacher ratio at C. B. Eaton Elementary is 23.3:1, which is 8% higher than the California average of 21.5:1 and 48% higher than the national average of 15.7:1.
What percentage of students receive free lunch at C. B. Eaton Elementary?
6.2% of students at C. B. Eaton Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of C. B. Eaton Elementary?
The largest demographic group at C. B. Eaton Elementary is Asian at 74.4% of enrollment, in Cupertino, CA.
What is the Resource Investment Index for C. B. Eaton Elementary?
C. B. Eaton Elementary has a Resource Investment Index of 40/100 (typical 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).
How does C. B. Eaton Elementary rank among elementary schools in Cupertino?
By Resource Investment Index, C. B. Eaton Elementary ranks #2 of 7 elementary schools in Cupertino, 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 Cupertino on the city page.
Is C. B. Eaton Elementary a good school?
C. B. Eaton Elementary earns 40/100 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.
What other schools are in Cupertino Union?
Besides C. B. Eaton Elementary, Cupertino Union also operates Cupertino Middle (1,067 students), Joaquin Miller Middle (1,067 students), and John F. Kennedy Middle (880 students). See the Cupertino Union district page for the complete list.
Related tools
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.