At a glance
Reported students
1,638
NCES CCD 2024–25
Teachers (FTE)
77.63
NCES CCD 2024–25
Student–teacher ratio
21.1:1
Calculated; not a class-size measure
Grades served
09–12
NCES preliminary directory 2025–26
School benchmarks
California high enrollment
78th percentile
Compared with 2,195 same-level schools reporting enrollment.
District median enrollment
1,125
Arroyo High: 1,638 reported students.
State peer staffing position
65th percentile
21.1:1 reported; state peer median 19.2:1. Ratio is not class size.
Historical enrollment and staffing · CRDC 2021–22
These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.
- Students
- 1,883
- Teachers (FTE)
- 79
- Student–teacher ratio
- 23.8:1
What the reported data says about Arroyo High
Arroyo High is a public high school serving grades 09–12 in El Monte. It is one of 7 current school records connected to El Monte Union High. NCES reports 1,638 students for 2024–25.
Among 2,195 high schools in California with comparable records, this school is larger than the reported median of 416 students. Its enrollment is at approximately the 78th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 21.1:1, close to the California median of 19.2:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.
The largest reported race and ethnicity groups are Hispanic or Latino (72.3%) and Asian (24.8%). English learners represent 13.5% of enrollment. Students served under IDEA represent 11.6%. These figures help families understand who the school serves; they are not rating inputs.
The 2021–22 civil-rights collection reports AP student enrollment, computer science. The school reported 15 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.
Questions worth asking Arroyo High
- 1How do the reported 21.1:1 student–teacher ratio and 77.63 teacher FTE translate into actual class sizes by grade?
- 2Have the reported academic programs changed since the 2021–22 CRDC collection?
- 3What counseling support is available today? The school reported 5 counselor FTE in 2021–22.
- 4Does community eligibility provide breakfast and lunch to every enrolled student, and are summer meals available?
Enrollment needs
- English learners
- 13.5%
- Students with disabilities
- 11.6%
- Free/reduced-price lunch
- 84.1%
- Lunch program
- Yes under Community Eligibility Option (CEO)
Reported support staff
- Counselors (FTE)
- 5
- Nurses (FTE)
- 0.2
- Psychologists (FTE)
- 1
- Social workers (FTE)
- 0
CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.
Student demographics
Race and ethnicity share of reported enrollment
- White1.7%
- Hispanic72.3%
- Black0.3%
- Asian24.8%
- American Indian / Alaska Native0%
- Native Hawaiian / Pacific Islander0.1%
- Multiracial0.5%
Race/ethnicity: NCES CCD 2024–25. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.
Programs reported by the school
AP student enrollment
Students enrolled
15 distinct courses reported
Gifted and talented
Not reported as offered
Computer science
Offered
CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.
Other schools in El Monte Union High
Start with campuses at the same school level or with similar reported enrollment.
Rosemead High
High · Grades 09–12
1,691 reported students
El Monte High
High · Grades 09–12
1,383 reported students
South El Monte High
High · Grades 09–12
1,125 reported students
Mountain View High
High · Grades 09–12
1,123 reported students
Fernando R. Ledesma Continuation High
High · Grades 10–12
293 reported students
El Monte Union High School Community Day
High · Grades 09–12
25 reported students