Enrollment
2,360
California · 2024-25 NCES data
High school (grades 9-12) · Belmont, CA
Carlmont High
Federal NCES profile for Carlmont High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 063639006194
👥 S:T ratio 17
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 41
📋 Attendance 69
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Carlmont High earns 51/100 on the Resource Investment Index, with class sizes near the California median. It is also one of the largest schools in California.
- #1 of 6
- public schools in Belmont · Resource Index
- 51
- Resource Index · Higher
- 20.7:1
- students per teacher
- 8.7%
- free-lunch eligible
Carlmont High has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Carlmont High ranks #1 of 6 public schools in Belmont, CA.
School address
District: Sequoia Union High · California
NCES ID 063639006194 Verify on NCES CCD record →
Teachers (FTE)
114.0
Federal CCD staff survey
Students per teacher
20.7:1
vs 21.5:1 California avg
-4% vs state
Free-lunch eligible
8.7%
vs 55.5% California avg
-84% vs state
Student-teacher ratio in context
How Carlmont High compares with California and U.S. medians
What stands out at Carlmont High
Carlmont High is a lower-poverty, large high school in Belmont, California, enrolling 2,360 students.
At 20.7:1, 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, 8.7% free-meal eligibility runs 84% below the California average.
By headcount it is one of the larger campuses in California, bigger than 98% of state schools at 2,360 students.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 127 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #39.
Its student body is led by White (41%) and Asian (33%), more mixed than most schools in the state (diversity index 69/100).
On the academic-pipeline side it reports 20 Advanced Placement courses.
Counselor coverage runs a bit thin, about 295 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
12.6% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Sequoia Union High spends $24,094 per pupil, 46% above the California average, a better-resourced district than most.
Sequoia Union High also operates Menlo-Atherton High (2,158 students) and Sequoia High (1,854 students) alongside Carlmont High.
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 Carlmont High compares
Carlmont High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.7:1 | ▼ 4% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 8.7% | ▼ 84% | 55.5% | 51.7% |
| Enrollment | 2,360 | top 2% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.7:1
Leaner classes than 14% of US schools, heavier class loads than most.
2,360
Bigger than 99% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
8.7%
free-lunch eligible
- 84% 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
20.7:1
students per teacher
- 4% below state mean
Top 41% in California - lower ratio than 59% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
12.6%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$24,094
per pupil, district-wide
- above California avg of $16,509
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors8.0 FTE
Per 295 students, the combined health-and-guidance staffing load for this school.
Discipline context
22
in-school suspensions + 25 out-of-school
Suspension rate: 0.9 per 100 students. Combined in-school and out-of-school rate: 2.0 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
White 40.7%
Asian 33.1%
Hispanic or Latino 15.3%
Two or More 8.6%
African American 1.1%
American Indian / Alaska Native 0.7%
Native Hawaiian / Pacific Islander 0.5%
Largest group: White at 40.7% of enrollment.
Student-body diversity index 69.4/100
Simpson diversity index - at 69.4, Carlmont High is more mixed than the California school average of 46.0.
Programs
AP courses offered 20
Funding & spending
District-wide per-pupil expenditure for Sequoia Union High, which includes Carlmont High.
$24,094
Per student
+46%
vs California
Avg $16,509
+45%
vs U.S.
Avg $16,593
Revenue mix
Local 83.7%
State 12.6%
Federal 3.7%
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 Carlmont High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Menlo-Atherton High | Similar size | Higher economic need | Similar S:T ratio |
| Sequoia High | Similar size | Higher economic need | Lower S:T ratio |
| Woodside High | Smaller | Higher economic need | Lower S:T ratio |
| Tide Academy | Smaller | Higher economic need | Lower S:T ratio |
| Redwood High | Smaller | Higher economic need | Higher S:T ratio |
Comparisons are relative to Carlmont High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,158
- Students per teacher
- 19.3:1
- Resource Index
- 34/100
- Enrollment
- 1,854
- Students per teacher
- 17.3:1
- Resource Index
- 32/100
- Enrollment
- 1,660
- Students per teacher
- 15.7:1
- Resource Index
- 36/100
- Enrollment
- 212
- Students per teacher
- 10.6:1
- Resource Index
- 50/100
- Enrollment
- 175
- Students per teacher
- 25:1
- Resource Index
- 32/100
Similar high 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 (~2,360 students)
Similar student-teacher ratio (~20.7:1)
Next steps
Verify locally before acting on Carlmont High's federal record.
- Compare Carlmont High against another school. Compare schools
- Sequoia Union High'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 Carlmont High
How many students attend Carlmont High?
Carlmont High has 2,360 students enrolled. It is a high school in Belmont, CA.
What is the student-teacher ratio at Carlmont High?
The student-teacher ratio at Carlmont High is 20.7:1, which is 4% lower than the California average of 21.5:1 and 32% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Carlmont High?
8.7% of students at Carlmont High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Carlmont High?
The largest demographic group at Carlmont High is White at 40.7% of enrollment, in Belmont, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 69.4/100.
What is the Resource Investment Index for Carlmont High?
Carlmont High has a Resource Investment Index of 51/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Carlmont High rank among public schools in Belmont?
By Resource Investment Index, Carlmont High ranks #1 of 6 public schools in Belmont, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Belmont on the city page.
Is Carlmont High a good school?
Carlmont High earns 51/100 on the Resource Investment Index, with class sizes near the California median. It is also one of the largest schools in California. 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 Sequoia Union High?
Besides Carlmont High, Sequoia Union High also operates Menlo-Atherton High (2,158 students), Sequoia High (1,854 students), and Woodside High (1,660 students). See the Sequoia Union High 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.