Enrollment
479
California · 2024-25 NCES data
Elementary school (grades K-5) · Pomona, CA
Arroyo Elementary
Federal NCES profile for Arroyo 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 063132004837
👥 S:T ratio 9
🌟 Gifted program 30
🎓 Counselors 4
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Arroyo Elementary earns 11/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most California schools.
- #19 of 22
- elementary schools in Pomona · Resource Index
- 11
- Resource Index · Lower
- 22.8:1
- students per teacher
- 88.1%
- free-lunch eligible
Arroyo Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Arroyo Elementary ranks #19 of 22 elementary schools in Pomona, CA.
School address
District: Pomona Unified · California
NCES ID 063132004837 Verify on NCES CCD record →
Teachers (FTE)
21.0
Federal CCD staff survey
Students per teacher
22.8:1
vs 21.5:1 California avg
+6% vs state
Free-lunch eligible
88.1%
vs 55.5% California avg
+59% vs state
Student-teacher ratio in context
How Arroyo Elementary compares with California and U.S. medians
What stands out at Arroyo Elementary
Arroyo Elementary is a high-poverty, mid-sized elementary school in Pomona, California, enrolling 479 students.
Class loads run somewhat heavier than typical: 22.8:1 puts it in the larger third of California schools by student-teacher ratio.
Economic need is high: 88.1% of students qualify for free meals, 59% above the California average, a Title I-weighted population that federal funding formulas prioritise.
With 479 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 1,598 similarly sized, similarly resourced-need California schools statewide, it ranks #1,476, in the lower tier once campus size and economic need are matched.
Its student body is predominantly Hispanic or Latino (95% of enrollment), among the less diverse in the state (diversity index 10/100).
Counselor access is stretched at roughly 479 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 54.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 17.6% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Pomona's elementary schools, it stands alongside Vejar Elementary (741 students): Arroyo Elementary is smaller than that campus by headcount and runs heavier classes (22.8:1 vs 20.6:1).
Pomona Unified also operates Garey High (1,567 students) and Diamond Ranch High (1,542 students) alongside Arroyo 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 Arroyo Elementary compares
Arroyo 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 | 22.8:1 | ▲ 6% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 88.1% | ▲ 59% | 55.5% | 51.7% |
| Enrollment | 479 | top 48% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22.8:1
Leaner classes than 9% of US schools, heavier class loads than most.
479
Bigger than 59% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
88.1%
free-lunch eligible
- 59% above the California average of 55.5%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
22.8:1
students per teacher
- 6% above state mean
Top 61% in California - lower ratio than 39% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
54.9%
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
$17,545
per pupil, district-wide
- above California avg of $16,509
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 479 students, the combined health-and-guidance staffing load for this school.
Discipline context
2
in-school suspensions + 1 out-of-school
Suspension rate: 0.4 per 100 students. Combined in-school and out-of-school rate: 0.6 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 94.6%
African American 1.9%
White 1.7%
Asian 1.5%
Native Hawaiian / Pacific Islander 0.2%
Two or More 0.2%
Largest group: Hispanic or Latino at 94.6% of enrollment.
Student-body diversity index 10.4/100
Simpson diversity index - at 10.4, Arroyo Elementary is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Pomona Unified, which includes Arroyo Elementary.
$17,545
Per student
+6%
vs California
Avg $16,509
+6%
vs U.S.
Avg $16,593
Revenue mix
Local 21.6%
State 60.9%
Federal 17.6%
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 Arroyo Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Garey High | Larger | Similar economic need | Lower S:T ratio |
| Diamond Ranch High | Larger | Lower economic need | Similar S:T ratio |
| School of Extended Educational Options | Larger | Lower economic need | Higher S:T ratio |
| Pomona High | Larger | Similar economic need | Lower S:T ratio |
| Ganesha High | Larger | Similar economic need | Lower S:T ratio |
Comparisons are relative to Arroyo Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,567
- Students per teacher
- 20.9:1
- Resource Index
- 34/100
- Enrollment
- 1,542
- Students per teacher
- 23.4:1
- Resource Index
- 36/100
- Enrollment
- 1,204
- Students per teacher
- 32.5:1
- Resource Index
- 43/100
- Enrollment
- 993
- Students per teacher
- 16.6:1
- Resource Index
- 37/100
- Enrollment
- 895
- Students per teacher
- 19.5:1
- Resource Index
- 35/100
Similar elementary schools in Pomona
6 comparable elementary schools (grades K-5) serving the same city.
Vejar Elementary
Standard public school
741 students 20.6:1 students per teacher
Kingsley Elementary
Standard public school
656 students 28.5:1 students per teacher
Washington Elementary
Standard public school
645 students 26.9:1 students per teacher
Cortez Elementary
Standard public school
607 students 22.5:1 students per teacher
Alcott Elementary
Standard public school
606 students 21.6:1 students per teacher
Lexington Elementary
Standard public school
537 students 21.5:1 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 (~479 students)
Next steps
Verify locally before acting on Arroyo Elementary's federal record.
- Compare Arroyo Elementary against another school. Compare schools
- Pomona 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 Arroyo Elementary
How many students attend Arroyo Elementary?
Arroyo Elementary has 479 students enrolled. It is an elementary school in Pomona, CA.
What is the student-teacher ratio at Arroyo Elementary?
The student-teacher ratio at Arroyo Elementary is 22.8:1, which is 6% higher than the California average of 21.5:1 and 45% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Arroyo Elementary?
88.1% of students at Arroyo Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Arroyo Elementary?
The largest demographic group at Arroyo Elementary is Hispanic or Latino at 94.6% of enrollment, in Pomona, CA.
What is the Resource Investment Index for Arroyo Elementary?
Arroyo Elementary has a Resource Investment Index of 11/100 (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).
How does Arroyo Elementary rank among elementary schools in Pomona?
By Resource Investment Index, Arroyo Elementary ranks #19 of 22 elementary schools in Pomona, 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 Pomona on the city page.
Is Arroyo Elementary a good school?
Arroyo Elementary earns 11/100 on the Resource Investment Index, with class sizes near the California median. 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 Pomona Unified?
Besides Arroyo Elementary, Pomona Unified also operates Garey High (1,567 students), Diamond Ranch High (1,542 students), and School of Extended Educational Options (1,204 students). See the Pomona 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.