Enrollment
1,068
California · 2024-25 NCES data
Middle school (grades 6-8) · San Jose, CA
Federal NCES profile for Union Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
The verdict
Union Middle earns 29/100 on the Resource Investment Index, with class sizes larger than 82% of California schools. It is also more racially and ethnically mixed than most California schools.
Union Middle has class sizes larger than 82% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Union Middle ranks #19 of 31 middle schools in San Jose, CA.
NCES ID 064032006680 Verify on NCES CCD record →
Enrollment
1,068
California · 2024-25 NCES data
Teachers (FTE)
42.0
Federal CCD staff survey
Students per teacher
25.4:1
vs 21.5:1 California avg
+18% vs state
Free-lunch eligible
5.1%
vs 55.5% California avg
-91% vs state
How Union Middle compares with California and U.S. medians
Larger classes than state median
25.4:1 - 3.9 above the California state median of 21.5:1, indicating larger average class loads than typical schools in the state.
Union Middle is a lower-poverty, large middle school in San Jose, California, enrolling 1,068 students.
Class loads run somewhat heavier than typical: 25.4:1 puts it in the larger third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 5.1% free-meal eligibility runs 91% below the California average.
By headcount it is one of the larger campuses in California, bigger than 90% of state schools at 1,068 students.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Among 296 similarly sized, similarly resourced-need California schools statewide, it ranks #231, in the lower tier once campus size and economic need are matched.
Its student body is led by Asian (41%) and White (36%), more mixed than most schools in the state (diversity index 67/100).
Counselor access is stretched at roughly 534 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 5.1% of students were chronically absent, below the typical post-pandemic national figure.
Among San Jose's middle schools, it stands alongside Willow Glen Middle (1,180 students): Union Middle is smaller than that campus by headcount and runs heavier classes (25.4:1 vs 25.1:1).
Union Elementary also operates Dartmouth Middle (903 students) and Carlton Elementary (656 students) alongside Union 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
Union 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 | 25.4:1 | ▲ 18% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 5.1% | ▼ 91% | 55.5% | 51.7% |
| Enrollment | 1,068 | top 10% | - | - |
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 41.2% of enrollment.
Simpson diversity index - at 67.4, Union Middle is more mixed than the California school average of 46.0.
District-wide per-pupil expenditure for Union Elementary, which includes Union 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 |
|---|---|---|---|
| Dartmouth Middle | Similar size | Similar economic need | Similar S:T ratio |
| Carlton Elementary | Smaller | Similar economic need | Higher S:T ratio |
| Oster Elementary | Smaller | Similar economic need | Similar S:T ratio |
| Alta Vista Elementary | Smaller | Similar economic need | Higher S:T ratio |
| Guadalupe Elementary | Smaller | Similar economic need | Lower S:T ratio |
Comparisons are relative to Union Middle's own figures; each column derives from NCES Common Core of Data.
6 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 Union 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.
Union Middle has 1,068 students enrolled. It is a middle school in San Jose, CA.
The student-teacher ratio at Union Middle is 25.4:1, which is 18% higher than the California average of 21.5:1 and 62% higher than the national average of 15.7:1.
5.1% of students at Union Middle are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Union Middle is Asian at 41.2% of enrollment, in San Jose, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 67.4/100.
Union Middle has a Resource Investment Index of 29/100 (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).
By Resource Investment Index, Union Middle ranks #19 of 31 middle schools in San Jose, 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 San Jose on the city page.
Union Middle earns 29/100 on the Resource Investment Index, with class sizes larger than 82% 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 Union Middle, Union Elementary also operates Dartmouth Middle (903 students), Carlton Elementary (656 students), and Oster Elementary (627 students). See the Union 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.
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PlainSchools, “Union Middle, San Jose 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/union-middle-ca
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