- Enrollment
- 1,691
- Students per teacher
- 21.4:1
- Resource Index
- 35/100
High school (grades 9-12) · El Monte, CA
Arroyo High
Federal NCES profile for Arroyo High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 27/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 061212001363
👥 S:T ratio 18
🌟 Gifted program 30
🎓 Counselors 34
📋 Attendance 25
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Arroyo High earns 27/100 on the Resource Investment Index, with class sizes near the California median. It is also one of the largest schools in California.
- #4 of 5
- high schools in El Monte · Resource Index
- 27
- Resource Index · Lower
- 20.5:1
- students per teacher
- 52.8%
- free-lunch eligible
Arroyo High has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Arroyo High ranks #4 of 5 high schools in El Monte, CA.
School address
District: El Monte Union High · California
NCES ID 061212001363 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-44 students YoY
Arroyo High held near 1,698 students from 2022-23 to 2023-24 (-44 headcount).
Teacher FTE lost 81.0 → 74.5 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-44 students YoY 061212001363 · El Monte, CA High · MID · TRAD
1,638 enr · 20.5:1 · 52.8% lunch · RII 27
Nearest enrollment peer: Rosemead High (1,691 students)
Arroyo High held near 1,698 students from 2022-23 to 2023-24 (-44 headcount). Teacher FTE lost 81.0 → 74.5 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Arroyo High in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Rosemead High
Rosemead High
1,691 students
- This school
Arroyo High
1,638 students
- El Monte High
El Monte High
1,383 students
- South El Monte
South El Monte High
1,125 students
- Mountain View
Mountain View High
1,123 students
- Fernando R. Le 293
Fernando R. Ledesma Continuation High
293 students
What this shows Arroyo High reports 1,638 students on the CCD universe file.
How Arroyo High compares
Arroyo High held steady on CCD headcount: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.5:1 | ▼ 5% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 52.8% | ▼ 5% | 55.5% | 51.7% |
| Enrollment | 1,638 | top 5% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.5:1
Leaner classes than 14% of US schools, heavier class loads than most.
1,638
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
52.8%
free-lunch eligible
- 5% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
20.5:1
students per teacher
- 5% below state mean
Top 39% in California - lower ratio than 61% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
30.2%
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
$20,582
per pupil, district-wide
- above California avg of $18,665
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors5.0 FTE
Per 328 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 81 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 4.9 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 72.4%
Asian 24.9%
White 1.7%
Two or More 0.6%
African American 0.3%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Hispanic or Latino at 72.4% of enrollment.
Student-body diversity index 41.3/100
Simpson diversity index - at 41.3, Arroyo High is less mixed than the California school average of 46.0.
Programs
AP courses offered 15
District finance for El Monte Union High reports $20,582 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Arroyo High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Rosemead High | Similar size | Similar economic need | Similar S:T ratio |
| El Monte High | Similar size | Similar economic need | Lower S:T ratio |
| South El Monte High | Smaller | Similar economic need | Lower S:T ratio |
| Mountain View High | Smaller | Higher economic need | Lower S:T ratio |
| Fernando R. Ledesma Continuation High | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Arroyo High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,383
- Students per teacher
- 18.2:1
- Resource Index
- 29/100
- Enrollment
- 1,125
- Students per teacher
- 18.1:1
- Resource Index
- 31/100
- Enrollment
- 1,123
- Students per teacher
- 17.3:1
- Resource Index
- 26/100
- Enrollment
- 293
- Students per teacher
- 16.3:1
- Resource Index
- 45/100
Similar high schools in El Monte
4 comparable high schools (grades 9-12) serving the same city.
El Monte High
Standard public school
1,383 students 18.2:1 students per teacher
Mountain View High
Standard public school
1,123 students 17.3:1 students per teacher
Fernando R. Ledesma Continuation High
Alternative education program
293 students 16.3:1 students per teacher
El Monte Union High School Community Day
Alternative education program
25 students 12.5:1 students per teacher
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~1,638 students)
Frequently asked questions about Arroyo High
How many students attend Arroyo High?
Arroyo High has 1,638 students enrolled. It is a high school in El Monte, CA. CCD year-over-year: 1,742 (2022-23) → 1,698 (2023-24), nearly flat (-44).
What is the student-teacher ratio at Arroyo High?
The student-teacher ratio at Arroyo High is 20.5:1, which is 5% lower than the California average of 21.5:1 and 31% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Arroyo High?
52.8% of students at Arroyo High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Arroyo High?
The largest demographic group at Arroyo High is Hispanic or Latino at 72.4% of enrollment, in El Monte, CA.
What is the Resource Investment Index for Arroyo High?
Arroyo High has a Resource Investment Index of 27/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Arroyo High rank among high schools in El Monte?
By Resource Investment Index, Arroyo High ranks #4 of 5 high 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 high schools in El Monte on the city page.
What other schools are in El Monte Union High?
Besides Arroyo High, El Monte Union High also operates Rosemead High (1,691 students), El Monte High (1,383 students), and South El Monte High (1,125 students). See the El Monte Union High district page for the complete list.