Enrollment
486
California · 2024-25 NCES data
Elementary school (grades K-5) · San Bruno, CA
Federal NCES profile for John Muir Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 33/100.
The verdict
John Muir Elementary earns 33/100 on the Resource Investment Index, with class sizes larger than 96% of California schools. It is also more racially and ethnically mixed than most California schools.
John Muir Elementary has class sizes larger than 96% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, John Muir Elementary ranks #3 of 7 elementary schools in San Bruno, CA.
NCES ID 063423005397 Verify on NCES CCD record →
Enrollment
486
California · 2024-25 NCES data
Teachers (FTE)
16.0
Federal CCD staff survey
Students per teacher
30.4:1
vs 21.5:1 California avg
+41% vs state
Free-lunch eligible
20.3%
vs 55.5% California avg
-63% vs state
How John Muir Elementary compares with California and U.S. medians
Larger classes than state median
30.4:1 - 8.9 above the California state median of 21.5:1, indicating larger average class loads than typical schools in the state.
John Muir Elementary is a mid-sized elementary school in San Bruno, California, enrolling 486 students.
Class loads run heavy: 30.4:1 is larger than about 96% of California schools and 41% above the 21.5:1 state mean, so each teacher carries more students than is typical.
Comparatively few students face economic hardship here, 20.3% free-meal eligibility runs 63% below the California average.
With 486 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 1,230 statewide peers matched on enrollment and economic need, it ranks mid-pack at #686.
Its student body is led by Asian (36%) and Two or More (36%), more mixed than most schools in the state (diversity index 68/100).
12.1% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among San Bruno's elementary schools, it stands alongside Monte Verde Elementary (517 students): John Muir Elementary is smaller than that campus by headcount and runs heavier classes (30.4:1 vs 23.5:1).
San Bruno Park Elementary also operates Parkside Intermediate (491 students) and Allen (Decima M.) Elementary (396 students) alongside John Muir 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
John Muir 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 | 30.4:1 | ▲ 41% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 20.3% | ▼ 63% | 55.5% | 51.7% |
| Enrollment | 486 | top 47% | - | - |
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 36.4% of enrollment.
Simpson diversity index - at 67.5, John Muir Elementary is more mixed than the California school average of 46.0.
District-wide per-pupil expenditure for San Bruno Park Elementary, which includes John Muir 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 |
|---|---|---|---|
| Parkside Intermediate | Similar size | Higher economic need | Lower S:T ratio |
| Allen (Decima M.) Elementary | Similar size | Higher economic need | Higher S:T ratio |
| Portola Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Belle Air Elementary | Smaller | Higher economic need | Lower S:T ratio |
| Rollingwood Elementary | Smaller | Similar economic need | Lower S:T ratio |
Comparisons are relative to John Muir 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 John Muir 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.
John Muir Elementary has 486 students enrolled. It is an elementary school in San Bruno, CA.
The student-teacher ratio at John Muir Elementary is 30.4:1, which is 41% higher than the California average of 21.5:1 and 94% higher than the national average of 15.7:1.
20.3% of students at John Muir Elementary are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at John Muir Elementary is Asian at 36.4% of enrollment, in San Bruno, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 67.5/100.
John Muir Elementary has a Resource Investment Index of 33/100 (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).
By Resource Investment Index, John Muir Elementary ranks #3 of 7 elementary schools in San Bruno, 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 Bruno on the city page.
John Muir Elementary earns 33/100 on the Resource Investment Index, with class sizes larger than 96% of California schools. It is also more racially and ethnically mixed than most 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 John Muir Elementary, San Bruno Park Elementary also operates Parkside Intermediate (491 students), Allen (Decima M.) Elementary (396 students), and Portola Elementary (378 students). See the San Bruno Park Elementary 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.
Published by
PlainSchools Editorial
Independent public-data reference that compiles, verifies, and contextualizes official datasets. We do not accept compensation from entities we cover, and every dataset cites its originating public source.
Last updated:
PlainSchools, “John Muir Elementary, San Bruno 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/john-muir-elementary-ca-8
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.