Enrollment
498
California · 2024-25 NCES data
Middle school (grades 6-8) · South San Francisco, CA
Federal NCES profile for Westborough Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
The verdict
Westborough Middle earns 40/100 on the Resource Investment Index, with class sizes smaller than 77% of California schools.
Westborough Middle has class sizes smaller than 77% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Westborough Middle ranks #1 of 3 middle schools in South San Francisco, CA.
NCES ID 063753006356 Verify on NCES CCD record →
Enrollment
498
California · 2024-25 NCES data
Teachers (FTE)
27.0
Federal CCD staff survey
Students per teacher
18.4:1
vs 21.5:1 California avg
-14% vs state
Free-lunch eligible
21.0%
vs 55.5% California avg
-62% vs state
How Westborough Middle compares with California and U.S. medians
Smaller classes than state median
18.4:1 - 3.1 below the California state median of 21.5:1, indicating smaller average class loads than typical schools in the state.
Westborough Middle is a mid-sized middle school in South San Francisco, California, enrolling 498 students.
Class sizes run a bit leaner than typical: 18.4:1 puts it in the smaller third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 21.0% free-meal eligibility runs 62% below the California average.
With 498 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 1,258 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #341.
Its student body is led by Asian (60%) and Hispanic or Latino (22%) (diversity index 58/100).
Counselor coverage is strong, about 192 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 22.5% of students chronically absent per the 2021-22 civil-rights collection.
Among South San Francisco's middle schools, it stands alongside Alta Loma Middle (652 students): Westborough Middle is smaller than that campus by headcount and runs leaner classes (18.4:1 vs 19.2:1).
South San Francisco Unified also operates South San Francisco High (1,239 students) and El Camino High (1,053 students) alongside Westborough Middle.
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
Westborough Middle on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.4:1 | ▼ 14% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 21.0% | ▼ 62% | 55.5% | 51.7% |
| Enrollment | 498 | top 46% | - | - |
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 60.0% of enrollment.
Simpson diversity index - at 58.1, Westborough Middle is more mixed than the California school average of 46.0.
District-wide per-pupil expenditure for South San Francisco Unified, which includes Westborough Middle.
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 |
|---|---|---|---|
| South San Francisco High | Larger | Higher economic need | Similar S:T ratio |
| El Camino High | Larger | Similar economic need | Similar S:T ratio |
| Alta Loma Middle | Larger | Higher economic need | Similar S:T ratio |
| Buri Buri Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Parkway Heights Middle | Similar size | Higher economic need | Lower S:T ratio |
Comparisons are relative to Westborough Middle's own figures; each column derives from NCES Common Core of Data.
2 comparable middle schools (grades 6-8) 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 Westborough Middle'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.
Westborough Middle has 498 students enrolled. It is a middle school in South San Francisco, CA.
The student-teacher ratio at Westborough Middle is 18.4:1, which is 14% lower than the California average of 21.5:1 and 17% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
21.0% of students at Westborough Middle are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Westborough Middle is Asian at 60.0% of enrollment, in South San Francisco, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.1/100.
Westborough Middle has a Resource Investment Index of 40/100 (typical 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).
By Resource Investment Index, Westborough Middle ranks #1 of 3 middle schools in South San Francisco, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in South San Francisco on the city page.
Westborough Middle earns 40/100 on the Resource Investment Index, with class sizes smaller than 77% of 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 Westborough Middle, South San Francisco Unified also operates South San Francisco High (1,239 students), El Camino High (1,053 students), and Alta Loma Middle (652 students). See the South 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, “Westborough Middle, South 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/westborough-middle-ca
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