Arroyo High School, located in El Monte, California, United States, is a school in the El Monte Union High School District. The attendance area served by Arroyo High School consists of four different communities: El Monte, Temple City, Arcadia, and an unincorporated area of Los Angeles County.
Serving 1,698 students in grades 9-12, Arroyo High School ranks in the top 30% of all schools in California for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 38% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 66% (which is higher than the California state average of 47%).
The student:teacher ratio of 23:1 is higher than the California state level of 21:1.
Minority enrollment is 98% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 1,698 students
- Student:Teacher Ratio: 23:1
- Minority Enrollment: 98%
- Graduation Rate: 92% (Top 30% in CA)
- Overall Testing Rank: Top 30%
- Math Proficiency: 38% (Top 50%)
- Reading Proficiency: 66% (Top 20%)
- Science Proficiency: 29% (Top 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Arroyo High School ranks among the top 20% of public schools in California for:
Category
Attribute
Reading/Language Arts Proficiency
School Overview
Arroyo High School's student population of 1,698 students has declined by 17% over five school years.
The teacher population of 75 teachers has declined by 17% over five school years.
Grades Offered
Grades 9-12
Total Students
1,698 students
Gender %
Total Classroom Teachers
75 teachers
Year Founded
1955
Colors
Black, Columbia blue
School Calendar
School Rankings
Arroyo High School ranks within the top 30% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Arroyo High School is 0.41, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#2359 out of 9523 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
38%
34%
Reading/Language Arts Test Scores (% Proficient)
66%
47%
Science Test Scores (% Proficient)
29%
29%
Student : Teacher Ratio
23:1
21:1
American Indian
n/a
1%
Asian
25%
12%
Hispanic
73%
56%
Black
n/a
5%
White
2%
20%
Hawaiian
n/a
n/a
Two or more races
n/a
6%
All Ethnic Groups
Graduation Rate
92%
87%
Eligible for Free Lunch
73%
54%
Eligible for Reduced Lunch
12%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Arroyo High School's ranking?
Arroyo High School is ranked #2359 out of 9,523 schools, which ranks it among the top 30% of public schools in California.
What schools are Arroyo High School often compared to?
Arroyo High Schoolis often viewed alongside schools like Rosemead High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
38% of students have achieved math proficiency (compared to the 34% CA state average), while 66% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Arroyo High School?
The graduation rate of Arroyo High School is 92%, which is higher than the California state average of 87%.
How many students attend Arroyo High School?
1,698 students attend Arroyo High School.
What is the racial composition of the student body?
73% of Arroyo High School students are Hispanic, 25% of students are Asian, and 2% of students are White.
What is the student:teacher ratio of Arroyo High School?
Arroyo High School has a student ration of 23:1, which is higher than the California state average of 21:1.
What grades does Arroyo High School offer ?
Arroyo High School offers enrollment in grades 9-12
What school district is Arroyo High School part of?
Arroyo High School is part of El Monte Union High School District.
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