Enrollment
21
California · 2024-25 NCES data
Elementary school (grades K-5) · El Monte, CA
Federal NCES profile for Thompson Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
The verdict
Thompson Elementary earns 38/100 on the Resource Investment Index, with class sizes near the California median. It is also one of the smallest schools in California.
Thompson Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Thompson Elementary ranks #6 of 21 elementary schools in El Monte, CA.
NCES ID 061209001360 Verify on NCES CCD record →
Enrollment
21
California · 2024-25 NCES data
Teachers (FTE)
1.0
Federal CCD staff survey
Students per teacher
21:1
vs 21.5:1 California avg
-2% vs state
Free-lunch eligible
30.8%
vs 55.5% California avg
-45% vs state
How Thompson Elementary compares with California and U.S. medians
At or below state median
21:1 - 0.5 below the California state median of 21.5:1, indicating smaller average class loads than typical schools in the state.
Thompson Elementary is a small elementary school in El Monte, California, enrolling 21 students.
At 21:1, its student-teacher ratio sits close to the California median, within a few percentage points of the 21.5:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 30.8% of students eligible for free meals.
This is a small campus: fewer students than 97% of California schools, with 21 enrolled.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 38 statewide peers matched on enrollment and economic need, it ranks mid-pack at #19.
Its student body is predominantly Hispanic or Latino (86% of enrollment) (diversity index 25/100).
Counselor coverage is strong, about 60 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 33.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding El Monte City spends $21,213 per pupil, 28% above the California average, a better-resourced district than most.
Among El Monte's elementary schools, it stands alongside Durfee Elementary (1,120 students): Thompson Elementary is smaller than that campus by headcount and runs leaner classes (21:1 vs 22.9:1).
El Monte City also operates Durfee Elementary (1,120 students) and Columbia Elementary (706 students) alongside Thompson 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
Thompson 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 | 21:1 | ▼ 2% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 30.8% | ▼ 45% | 55.5% | 51.7% |
| Enrollment | 21 | top 97% | - | - |
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: Hispanic or Latino at 85.7% of enrollment.
Simpson diversity index - at 24.5, Thompson Elementary is less mixed than the California school average of 46.0.
District-wide per-pupil expenditure for El Monte City, which includes Thompson 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 |
|---|---|---|---|
| Durfee Elementary | Larger | Higher economic need | Higher S:T ratio |
| Columbia Elementary | Larger | Higher economic need | Similar S:T ratio |
| Rio Hondo Elementary | Larger | Higher economic need | Lower S:T ratio |
| Potrero Elementary | Larger | Higher economic need | Similar S:T ratio |
| Wright Elementary | Larger | Higher economic need | Similar S:T ratio |
Comparisons are relative to Thompson 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 Thompson 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.
Thompson Elementary has 21 students enrolled. It is an elementary school in El Monte, CA.
The student-teacher ratio at Thompson Elementary is 21:1, which is 2% lower than the California average of 21.5:1 and 34% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
30.8% of students at Thompson Elementary are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Thompson Elementary is Hispanic or Latino at 85.7% of enrollment, in El Monte, CA.
Thompson Elementary has a Resource Investment Index of 38/100 (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, Thompson Elementary ranks #6 of 21 elementary schools in El Monte, 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 El Monte on the city page.
Thompson Elementary earns 38/100 on the Resource Investment Index, with class sizes near the California median. It is also one of the smallest 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 Thompson Elementary, El Monte City also operates Durfee Elementary (1,120 students), Columbia Elementary (706 students), and Rio Hondo Elementary (636 students). See the El Monte City 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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Last updated:
PlainSchools, “Thompson Elementary, El Monte 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/thompson-elementary-ca
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