Enrollment
746
California · 2024-25 NCES data
Elementary school (grades K-5) · Milpitas, CA
Mabel Mattos Elementary
Federal NCES profile for Mabel Mattos Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
2024-25 NCES dataElementary school (grades K-5)NCES 062450014277
👥 S:T ratio 0
🌟 Gifted program 30
📋 Attendance 89
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mabel Mattos Elementary earns 40/100 on the Resource Investment Index, with class sizes larger than 97% of California schools.
- #1 of 10
- elementary schools in Milpitas · Resource Index
- 40
- Resource Index · Typical
- 32.4:1
- large classes for California
- 9.4%
- free-lunch eligible
Mabel Mattos Elementary has class sizes larger than 97% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Mabel Mattos Elementary ranks #1 of 10 elementary schools in Milpitas, CA.
School address
District: Milpitas Unified · California
NCES ID 062450014277 Verify on NCES CCD record →
Teachers (FTE)
23.0
Federal CCD staff survey
Students per teacher
32.4:1
vs 21.5:1 California avg
+51% vs state
Free-lunch eligible
9.4%
vs 55.5% California avg
-83% vs state
Student-teacher ratio in context
How Mabel Mattos Elementary compares with California and U.S. medians
What stands out at Mabel Mattos Elementary
Mabel Mattos Elementary is a lower-poverty, mid-sized elementary school in Milpitas, California, enrolling 746 students.
Class loads run heavy: 32.4:1 is larger than about 97% of California schools and 51% above the 21.5:1 state mean, so each teacher carries more students than is typical.
Comparatively few students face economic hardship here, 9.4% free-meal eligibility runs 83% below the California average.
Enrollment of 746 puts it in the larger third of California schools by headcount.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 765 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #261.
Its student body is led by Asian (79%) and Two or More (7%) (diversity index 36/100).
Attendance holds up well here: only 4.3% of students were chronically absent, below the typical post-pandemic national figure.
Among Milpitas's elementary schools, it stands alongside John Sinnott Elementary (686 students): Mabel Mattos Elementary is larger than that campus by headcount and runs heavier classes (32.4:1 vs 23.7:1).
Milpitas Unified also operates Milpitas High (2,926 students) and Thomas Russell Middle (761 students) alongside Mabel Mattos 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
How Mabel Mattos Elementary compares
Mabel Mattos 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 | 32.4:1 | ▲ 51% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 9.4% | ▼ 83% | 55.5% | 51.7% |
| Enrollment | 746 | top 20% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
32.4:1
Leaner classes than 1% of US schools, heavier class loads than most.
746
Bigger than 83% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
9.4%
free-lunch eligible
- 83% 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
32.4:1
students per teacher
- 51% above state mean
Top 97% in California - lower ratio than 3% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
4.3%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$14,397
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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
Asian 79.4%
Two or More 6.6%
White 6.2%
Hispanic or Latino 5.8%
African American 1.2%
American Indian / Alaska Native 0.8%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Asian at 79.4% of enrollment.
Student-body diversity index 35.8/100
Simpson diversity index - at 35.8, Mabel Mattos Elementary is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Milpitas Unified, which includes Mabel Mattos Elementary.
$14,397
Per student
-13%
vs California
Avg $16,509
-13%
vs U.S.
Avg $16,593
Revenue mix
Local 53.7%
State 38.5%
Federal 7.8%
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 Mabel Mattos Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Milpitas High | Larger | Higher economic need | Lower S:T ratio |
| Thomas Russell Middle | Similar size | Higher economic need | Lower S:T ratio |
| Rancho Milpitas Middle | Similar size | Higher economic need | Lower S:T ratio |
| John Sinnott Elementary | Similar size | Similar economic need | Lower S:T ratio |
| Curtner Elementary | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Mabel Mattos Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,926
- Students per teacher
- 22.2:1
- Resource Index
- 35/100
- Enrollment
- 761
- Students per teacher
- 21.7:1
- Resource Index
- 30/100
- Enrollment
- 693
- Students per teacher
- 21:1
- Resource Index
- 38/100
- Enrollment
- 686
- Students per teacher
- 23.7:1
- Resource Index
- 39/100
- Enrollment
- 663
- Students per teacher
- 26.5:1
- Resource Index
- 27/100
Similar elementary schools in Milpitas
6 comparable elementary schools (grades K-5) serving the same city.
John Sinnott Elementary
Standard public school
686 students 23.7:1 students per teacher
Curtner Elementary
Standard public school
663 students 26.5:1 students per teacher
Anthony Spangler Elementary
Standard public school
610 students 24.4:1 students per teacher
Marshall Pomeroy Elementary
Standard public school
597 students 23.9:1 students per teacher
Pearl Zanker Elementary
Standard public school
563 students 24.5:1 students per teacher
Alexander Rose Elementary
Standard public school
518 students 25.9:1 students per teacher
Similar elementary 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 (~746 students)
Similar student-teacher ratio (~32.4:1)
Next steps
Verify locally before acting on Mabel Mattos Elementary's federal record.
- Compare Mabel Mattos Elementary against another school. Compare schools
- Milpitas Unified'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 Mabel Mattos Elementary
How many students attend Mabel Mattos Elementary?
Mabel Mattos Elementary has 746 students enrolled. It is an elementary school in Milpitas, CA.
What is the student-teacher ratio at Mabel Mattos Elementary?
The student-teacher ratio at Mabel Mattos Elementary is 32.4:1, which is 51% higher than the California average of 21.5:1 and 106% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Mabel Mattos Elementary?
9.4% of students at Mabel Mattos Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Mabel Mattos Elementary?
The largest demographic group at Mabel Mattos Elementary is Asian at 79.4% of enrollment, in Milpitas, CA.
What is the Resource Investment Index for Mabel Mattos Elementary?
Mabel Mattos Elementary has a Resource Investment Index of 40/100 (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).
How does Mabel Mattos Elementary rank among elementary schools in Milpitas?
By Resource Investment Index, Mabel Mattos Elementary ranks #1 of 10 elementary schools in Milpitas, 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 Milpitas on the city page.
Is Mabel Mattos Elementary a good school?
Mabel Mattos Elementary earns 40/100 on the Resource Investment Index, with class sizes larger than 97% 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.
What other schools are in Milpitas Unified?
Besides Mabel Mattos Elementary, Milpitas Unified also operates Milpitas High (2,926 students), Thomas Russell Middle (761 students), and Rancho Milpitas Middle (693 students). See the Milpitas Unified 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.