Enrollment
2,541
California · 2024-25 NCES data
High school (grades 9-12) · Chino Hills, CA
Ruben S. Ayala High
Federal NCES profile for Ruben S. Ayala High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 060846009757
👥 S:T ratio 1
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 27
📋 Attendance 49
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ruben S. Ayala High earns 42/100 on the Resource Investment Index, with class sizes larger than 77% of California schools. It is also one of the largest schools in California.
- #2 of 3
- high schools in Chino Hills · Resource Index
- 42
- Resource Index · Typical
- 24.7:1
- large classes for California
- 22.2%
- free-lunch eligible
Ruben S. Ayala High has class sizes larger than 77% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Ruben S. Ayala High ranks #2 of 3 high schools in Chino Hills, CA.
School address
District: Chino Valley Unified · California
NCES ID 060846009757 Verify on NCES CCD record →
Teachers (FTE)
103.0
Federal CCD staff survey
Students per teacher
24.7:1
vs 21.5:1 California avg
+15% vs state
Free-lunch eligible
22.2%
vs 55.5% California avg
-60% vs state
Student-teacher ratio in context
How Ruben S. Ayala High compares with California and U.S. medians
What stands out at Ruben S. Ayala High
Ruben S. Ayala High is a large high school in Chino Hills, California, enrolling 2,541 students.
Class loads run somewhat heavier than typical: 24.7:1 puts it in the larger third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 22.2% free-meal eligibility runs 60% below the California average.
By headcount it is one of the larger campuses in California, bigger than 99% of state schools at 2,541 students.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Among 229 similarly sized, similarly resourced-need California schools statewide, it ranks #183, in the lower tier once campus size and economic need are matched.
Its student body is led by Asian (42%) and Hispanic or Latino (39%) (diversity index 66/100).
On the academic-pipeline side it reports 27 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 363 students sharing each counselor, though short of the most stretched campuses.
Attendance runs somewhat below the norm, with 20.3% of students chronically absent per the 2021-22 civil-rights collection.
The federal civil-rights collection also records 4 expulsions at this campus for 2021-22.
Among Chino Hills's high schools, it stands alongside Chino Hills High (2,748 students): Ruben S. Ayala High is smaller than that campus by headcount and runs leaner classes (24.7:1 vs 25.4:1).
Chino Valley Unified also operates Chino Hills High (2,748 students) and Chino High (2,077 students) alongside Ruben S. Ayala High.
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 Ruben S. Ayala High compares
Ruben S. Ayala High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 24.7:1 | ▲ 15% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 22.2% | ▼ 60% | 55.5% | 51.7% |
| Enrollment | 2,541 | top 1% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
24.7:1
Leaner classes than 5% of US schools, heavier class loads than most.
2,541
Bigger than 99% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
22.2%
free-lunch eligible
- 60% 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
24.7:1
students per teacher
- 15% above state mean
Top 77% in California - lower ratio than 23% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
20.3%
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
$13,384
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
Counselors7.0 FTE
Per 363 students, the combined health-and-guidance staffing load for this school.
Discipline context
7
in-school suspensions + 69 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 3.0 per 100 students. Reported via the Civil Rights Data Collection. Includes 4 expulsions.
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 41.8%
Hispanic or Latino 38.9%
White 13.3%
Two or More 3.2%
African American 2.3%
Native Hawaiian / Pacific Islander 0.4%
Largest group: Asian at 41.8% of enrollment.
Student-body diversity index 65.5/100
Simpson diversity index - at 65.5, Ruben S. Ayala High is more mixed than the California school average of 46.0.
Programs
AP courses offered 27
Funding & spending
District-wide per-pupil expenditure for Chino Valley Unified, which includes Ruben S. Ayala High.
$13,384
Per student
-19%
vs California
Avg $16,509
-19%
vs U.S.
Avg $16,593
Revenue mix
Local 35.4%
State 53.7%
Federal 10.9%
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 Ruben S. Ayala High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Chino Hills High | Similar size | Similar economic need | Similar S:T ratio |
| Chino High | Similar size | Higher economic need | Similar S:T ratio |
| Don Antonio Lugo High | Smaller | Higher economic need | Lower S:T ratio |
| Canyon Hills Junior High | Smaller | Similar economic need | Higher S:T ratio |
| Cal Aero Preserve Academy | Smaller | Similar economic need | Lower S:T ratio |
Comparisons are relative to Ruben S. Ayala High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,748
- Students per teacher
- 25.4:1
- Resource Index
- 20/100
- Enrollment
- 2,077
- Students per teacher
- 23.9:1
- Resource Index
- 25/100
- Enrollment
- 1,256
- Students per teacher
- 16.7:1
- Resource Index
- 30/100
- Enrollment
- 1,070
- Students per teacher
- 28.2:1
- Resource Index
- 44/100
- Enrollment
- 982
- Students per teacher
- 14.4:1
- Resource Index
- 28/100
Similar high schools in Chino Hills
2 comparable high schools (grades 9-12) serving the same city.
Similar high 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 (~2,541 students)
Similar student-teacher ratio (~24.7:1)
Next steps
Verify locally before acting on Ruben S. Ayala High's federal record.
- Compare Ruben S. Ayala High against another school. Compare schools
- Chino Valley 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 Ruben S. Ayala High
How many students attend Ruben S. Ayala High?
Ruben S. Ayala High has 2,541 students enrolled. It is a high school in Chino Hills, CA.
What is the student-teacher ratio at Ruben S. Ayala High?
The student-teacher ratio at Ruben S. Ayala High is 24.7:1, which is 15% higher than the California average of 21.5:1 and 57% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Ruben S. Ayala High?
22.2% of students at Ruben S. Ayala High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Ruben S. Ayala High?
The largest demographic group at Ruben S. Ayala High is Asian at 41.8% of enrollment, in Chino Hills, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.5/100.
What is the Resource Investment Index for Ruben S. Ayala High?
Ruben S. Ayala High has a Resource Investment Index of 42/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Ruben S. Ayala High rank among high schools in Chino Hills?
By Resource Investment Index, Ruben S. Ayala High ranks #2 of 3 high schools in Chino Hills, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Chino Hills on the city page.
Is Ruben S. Ayala High a good school?
Ruben S. Ayala High earns 42/100 on the Resource Investment Index, with class sizes larger than 77% of California schools. It is also one of the largest 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.
What other schools are in Chino Valley Unified?
Besides Ruben S. Ayala High, Chino Valley Unified also operates Chino Hills High (2,748 students), Chino High (2,077 students), and Don Antonio Lugo High (1,256 students). See the Chino Valley 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.