Enrollment
2,571
California · 2024-25 NCES data
High school (grades 9-12) · San Francisco, CA
Federal NCES profile for Lowell High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
The verdict
Lowell 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.
Lowell High has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Lowell High ranks #9 of 21 high schools in San Francisco, CA.
NCES ID 063441005643 Verify on NCES CCD record →
Enrollment
2,571
California · 2024-25 NCES data
Teachers (FTE)
110.0
Federal CCD staff survey
Students per teacher
23.4:1
vs 21.5:1 California avg
+9% vs state
Free-lunch eligible
32.1%
vs 55.5% California avg
-42% vs state
How Lowell High compares with California and U.S. medians
Slightly above state median
23.4:1 - 1.9 above the California state median of 21.5:1, indicating larger average class loads than typical schools in the state.
Lowell High is a large high school in San Francisco, California, enrolling 2,571 students.
Class loads run somewhat heavier than typical: 23.4:1 puts it in the larger third of California schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 32.1% of students eligible for free meals.
By headcount it is one of the larger campuses in California, bigger than 99% of state schools at 2,571 students.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 221 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #49.
Its student body is led by Asian (52%) and Hispanic or Latino (17%) (diversity index 66/100).
On the academic-pipeline side it reports 26 Advanced Placement courses.
Counselor access is stretched at roughly 510 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 9.0% of students were chronically absent, below the typical post-pandemic national figure.
The surrounding San Francisco Unified spends $23,654 per pupil, 43% above the California average, a better-resourced district than most.
Among San Francisco's high schools, it stands alongside Five Keys Independence Hs (Sf Sheriff's) (3,447 students): Lowell High is smaller than that campus by headcount and runs leaner classes (23.4:1 vs 61.6:1).
San Francisco Unified also operates Lincoln (Abraham) High (2,074 students) and Washington (George) High (2,068 students) alongside Lowell 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
Lowell 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 | 23.4:1 | ▲ 9% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 32.1% | ▼ 42% | 55.5% | 51.7% |
| Enrollment | 2,571 | top 1% | - | - |
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 52.4% of enrollment.
Simpson diversity index - at 65.6, Lowell High is more mixed than the California school average of 46.0.
District-wide per-pupil expenditure for San Francisco Unified, which includes Lowell High.
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 |
|---|---|---|---|
| Lincoln (Abraham) High | Similar size | Higher economic need | Similar S:T ratio |
| Washington (George) High | Similar size | Higher economic need | Similar S:T ratio |
| Galileo High | Smaller | Higher economic need | Lower S:T ratio |
| Balboa High | Smaller | Higher economic need | Lower S:T ratio |
| Giannini (a.P.) Middle | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Lowell High's own figures; each column derives from NCES Common Core of Data.
6 comparable high schools (grades 9-12) 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 Lowell High'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.
Lowell High has 2,571 students enrolled. It is a high school in San Francisco, CA.
The student-teacher ratio at Lowell High is 23.4:1, which is 9% higher than the California average of 21.5:1 and 49% higher than the national average of 15.7:1.
32.1% of students at Lowell High are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Lowell High is Asian at 52.4% of enrollment, in San Francisco, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.6/100.
Lowell 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).
By Resource Investment Index, Lowell High ranks #9 of 21 high schools in San Francisco, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in San Francisco on the city page.
Lowell 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.
Besides Lowell High, San Francisco Unified also operates Lincoln (Abraham) High (2,074 students), Washington (George) High (2,068 students), and Galileo High (1,750 students). See the San Francisco 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, “Lowell High, San Francisco 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/lowell-high-ca
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