Enrollment
440
California · 2024-25 NCES data
Elementary school (grades K-5) · Compton, CA
Mayo Elementary
Federal NCES profile for Mayo Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 11/100.
2024-25 NCES dataElementary school (grades K-5)NCES 060962000990
👥 S:T ratio 2
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mayo Elementary earns 11/100 on the Resource Investment Index, with class sizes larger than 75% of California schools. It is also less racially and ethnically mixed than most California schools.
- #19 of 20
- elementary schools in Compton · Resource Index
- 11
- Resource Index · Lower
- 24.4:1
- large classes for California
- 65.3%
- free-lunch eligible
Mayo Elementary has class sizes larger than 75% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Mayo Elementary ranks #19 of 20 elementary schools in Compton, CA.
School address
District: Compton Unified · California
NCES ID 060962000990 Verify on NCES CCD record →
Teachers (FTE)
18.0
Federal CCD staff survey
Students per teacher
24.4:1
vs 21.5:1 California avg
+13% vs state
Free-lunch eligible
65.3%
vs 55.5% California avg
+18% vs state
Student-teacher ratio in context
How Mayo Elementary compares with California and U.S. medians
What stands out at Mayo Elementary
Mayo Elementary is a higher-need, mid-sized elementary school in Compton, California, enrolling 440 students.
Class loads run somewhat heavier than typical: 24.4:1 puts it in the larger third of California schools by student-teacher ratio.
Its free-meal eligibility rate of 65.3% lands close to the California typical range, neither a high- nor low-need campus by this measure.
With 440 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index trails 96% of the 9,998 California schools with a score on record, one of the lower results on this measure.
Among 1,920 similarly sized, similarly resourced-need California schools statewide, it ranks #1,762, in the lower tier once campus size and economic need are matched.
Its student body is predominantly Hispanic or Latino (94% of enrollment), among the less diverse in the state (diversity index 12/100).
Chronic absenteeism is elevated: 42.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Compton's elementary schools, it stands alongside Clinton William Jefferson (692 students): Mayo Elementary is smaller than that campus by headcount and runs heavier classes (24.4:1 vs 23.9:1).
Compton Unified also operates Dominguez High (1,582 students) and Compton High (1,438 students) alongside Mayo 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 Mayo Elementary compares
Mayo 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 | 24.4:1 | ▲ 13% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 65.3% | ▲ 18% | 55.5% | 51.7% |
| Enrollment | 440 | top 54% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
24.4:1
Leaner classes than 6% of US schools, heavier class loads than most.
440
Bigger than 53% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
65.3%
free-lunch eligible
- 18% above the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
24.4:1
students per teacher
- 13% above state mean
Top 75% in California - lower ratio than 25% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
42.0%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$15,270
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
Hispanic or Latino 93.6%
African American 5.5%
Two or More 0.7%
American Indian / Alaska Native 0.2%
Largest group: Hispanic or Latino at 93.6% of enrollment.
Student-body diversity index 12.1/100
Simpson diversity index - at 12.1, Mayo Elementary is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Compton Unified, which includes Mayo Elementary.
$15,270
Per student
-8%
vs California
Avg $16,509
-8%
vs U.S.
Avg $16,593
Revenue mix
Local 15.5%
State 70.8%
Federal 13.8%
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 Mayo Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Dominguez High | Larger | Similar economic need | Lower S:T ratio |
| Compton High | Larger | Similar economic need | Similar S:T ratio |
| Centennial High | Larger | Similar economic need | Lower S:T ratio |
| Clinton William Jefferson | Larger | Similar economic need | Similar S:T ratio |
| Kelly Elementary | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Mayo Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,582
- Students per teacher
- 21.4:1
- Resource Index
- 34/100
- Enrollment
- 1,438
- Students per teacher
- 24.8:1
- Resource Index
- 28/100
- Enrollment
- 908
- Students per teacher
- 19.7:1
- Resource Index
- 34/100
- Enrollment
- 692
- Students per teacher
- 23.9:1
- Resource Index
- 37/100
- Enrollment
- 685
- Students per teacher
- 25.4:1
- Resource Index
- 24/100
Similar elementary schools in Compton
6 comparable elementary schools (grades K-5) serving the same city.
Clinton William Jefferson
Standard public school
692 students 23.9:1 students per teacher
Kelly Elementary
Standard public school
685 students 25.4:1 students per teacher
Dickison Elementary
Standard public school
681 students 26.2:1 students per teacher
Jefferson Elementary
Standard public school
642 students 24.7:1 students per teacher
Robert F. Kennedy Elementary
Standard public school
610 students 25.4:1 students per teacher
Tibby Elementary
Standard public school
554 students 22.2:1 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 (~440 students)
Next steps
Verify locally before acting on Mayo Elementary's federal record.
- Compare Mayo Elementary against another school. Compare schools
- Compton 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 Mayo Elementary
How many students attend Mayo Elementary?
Mayo Elementary has 440 students enrolled. It is an elementary school in Compton, CA.
What is the student-teacher ratio at Mayo Elementary?
The student-teacher ratio at Mayo Elementary is 24.4:1, which is 13% higher than the California average of 21.5:1 and 55% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Mayo Elementary?
65.3% of students at Mayo Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Mayo Elementary?
The largest demographic group at Mayo Elementary is Hispanic or Latino at 93.6% of enrollment, in Compton, CA.
What is the Resource Investment Index for Mayo Elementary?
Mayo Elementary has a Resource Investment Index of 11/100 (lower 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 Mayo Elementary rank among elementary schools in Compton?
By Resource Investment Index, Mayo Elementary ranks #19 of 20 elementary schools in Compton, 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 Compton on the city page.
Is Mayo Elementary a good school?
Mayo Elementary earns 11/100 on the Resource Investment Index, with class sizes larger than 75% of California schools. It is also less 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.
What other schools are in Compton Unified?
Besides Mayo Elementary, Compton Unified also operates Dominguez High (1,582 students), Compton High (1,438 students), and Centennial High (908 students). See the Compton 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.