Enrollment
436
California · 2024-25 NCES data
Elementary school (grades K-5) · Campbell, CA
Castlemont Elementary
Federal NCES profile for Castlemont Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 19/100.
2024-25 NCES dataElementary school (grades K-5)NCES 060720000664Charter school
👥 S:T ratio 13
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 34
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Castlemont Elementary earns 19/100 on the Resource Investment Index, with class sizes near the California median.
- #5 of 5
- elementary schools in Campbell · Resource Index
- 19
- Resource Index · Lower
- 21.8:1
- students per teacher
- 41.2%
- free-lunch eligible
Castlemont Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Castlemont Elementary ranks #5 of 5 elementary schools in Campbell, CA.
School address
District: Campbell Union · California
NCES ID 060720000664 Verify on NCES CCD record →
Teachers (FTE)
20.0
Federal CCD staff survey
Students per teacher
21.8:1
vs 21.5:1 California avg
+1% vs state
Free-lunch eligible
41.2%
vs 55.5% California avg
-26% vs state
Student-teacher ratio in context
How Castlemont Elementary compares with California and U.S. medians
What stands out at Castlemont Elementary
Castlemont Elementary is a mid-sized charter elementary school in Campbell, California, enrolling 436 students.
At 21.8:1, 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 runs somewhat below the state's typical profile, with 41.2% of students eligible for free meals.
With 436 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 1,268 similarly sized, similarly resourced-need California schools statewide, it ranks #1,020, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (56%) and White (20%) (diversity index 63/100).
Counselor access is stretched at roughly 872 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 26.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Campbell's elementary schools, it stands alongside Campbell School of Innovation (815 students): Castlemont Elementary is smaller than that campus by headcount and runs leaner classes (21.8:1 vs 26.3:1).
Campbell Union also operates Campbell School of Innovation (815 students) and Rolling Hills Middle (778 students) alongside Castlemont 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 Castlemont Elementary compares
Castlemont 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 | 21.8:1 | ▲ 1% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 41.2% | ▼ 26% | 55.5% | 51.7% |
| Enrollment | 436 | top 55% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
21.8:1
Leaner classes than 11% of US schools, heavier class loads than most.
436
Bigger than 53% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
41.2%
free-lunch eligible
- 26% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
21.8:1
students per teacher
- 1% above state mean
Top 51% in California - lower ratio than 49% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
26.4%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$16,592
per pupil, district-wide
- above California avg of $16,509
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors0.5 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
16
in-school suspensions + 13 out-of-school
Suspension rate: 3.7 per 100 students. Combined in-school and out-of-school rate: 6.7 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
Hispanic or Latino 55.7%
White 19.5%
Asian 11.0%
Two or More 7.6%
African American 5.3%
Native Hawaiian / Pacific Islander 0.9%
Largest group: Hispanic or Latino at 55.7% of enrollment.
Student-body diversity index 63.1/100
Simpson diversity index - at 63.1, Castlemont Elementary is more mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Campbell Union, which includes Castlemont Elementary.
$16,592
Per student
+1%
vs California
Avg $16,509
0%
vs U.S.
Avg $16,593
Revenue mix
Local 69.7%
State 21.9%
Federal 8.4%
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 Castlemont Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Campbell School of Innovation | Larger | Lower economic need | Higher S:T ratio |
| Rolling Hills Middle | Larger | Lower economic need | Lower S:T ratio |
| Monroe Middle | Larger | Similar economic need | Lower S:T ratio |
| Sherman Oaks Elementary | Similar size | Similar economic need | Similar S:T ratio |
| Forest Hill Elementary | Similar size | Lower economic need | Lower S:T ratio |
Comparisons are relative to Castlemont Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 815
- Students per teacher
- 26.3:1
- Resource Index
- 31/100
- Enrollment
- 778
- Students per teacher
- 19:1
- Resource Index
- 36/100
- Enrollment
- 677
- Students per teacher
- 19.3:1
- Resource Index
- 30/100
- Enrollment
- 524
- Students per teacher
- 21.8:1
- Resource Index
- 31/100
- Enrollment
- 506
- Students per teacher
- 19.5:1
- Resource Index
- 40/100
Similar elementary schools in Campbell
4 comparable elementary schools (grades K-5) serving the same city.
Campbell School of Innovation
Standard public school
815 students 26.3:1 students per teacher
Capri Elementary
Standard public school
457 students 24.1:1 students per teacher
Rosemary
Standard public school
413 students 27.5:1 students per teacher
Village
Standard public school
198 students 22:1 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 (~436 students)
Similar student-teacher ratio (~21.8:1)
Next steps
Verify locally before acting on Castlemont Elementary's federal record.
- Compare Castlemont Elementary against another school. Compare schools
- Campbell 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 Castlemont Elementary
How many students attend Castlemont Elementary?
Castlemont Elementary has 436 students enrolled. It is an elementary school in Campbell, CA.
What is the student-teacher ratio at Castlemont Elementary?
The student-teacher ratio at Castlemont Elementary is 21.8:1, which is 1% higher than the California average of 21.5:1 and 39% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Castlemont Elementary?
41.2% of students at Castlemont Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Castlemont Elementary?
The largest demographic group at Castlemont Elementary is Hispanic or Latino at 55.7% of enrollment, in Campbell, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 63.1/100.
What is the Resource Investment Index for Castlemont Elementary?
Castlemont Elementary has a Resource Investment Index of 19/100 (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).
How does Castlemont Elementary rank among elementary schools in Campbell?
By Resource Investment Index, Castlemont Elementary ranks #5 of 5 elementary schools in Campbell, 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 Campbell on the city page.
Is Castlemont Elementary a good school?
Castlemont Elementary earns 19/100 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 Campbell Union?
Besides Castlemont Elementary, Campbell Union also operates Campbell School of Innovation (815 students), Rolling Hills Middle (778 students), and Monroe Middle (677 students). See the Campbell 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.