Arroyo High School is located in San Lorenzo, California, and is part of the San Lorenzo Unified School District. Serving as one of three public high schools for San Lorenzo and parts of San Leandro, its sister high school and cross-town rival is San Lorenzo High School.
Serving 1,499 students in grades 9-12, Arroyo High School ranks in the top 50% 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 35% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 59% (which is higher than the California state average of 47%).
The student-teacher ratio of 25:1 is higher than the California state level of 21:1.
Minority enrollment is 93% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 1,499 students
- Student-Teacher Ratio: 25:1
- Minority Enrollment: 93%
- Graduation Rate: 95% (Top 30% in CA)
- Overall Testing Rank: Top 50%
- Math Proficiency: 35% (Top 50%)
- Reading Proficiency: 59% (Top 30%)
- Science Proficiency: 39% (Top 30%)
- 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
Most improved public schools
School Overview
Arroyo High School's student population of 1,499 students has declined by 15% over five school years.
The teacher population of 61 teachers has declined by 10% over five school years.
Grades Offered
Grades 9-12
Total Students
1,499 students
Showing 2015–2025. Full 39-year historical data available below ↓
Total Classroom Teachers
61 teachers
Showing 2013–2025. Full 39-year historical data available below ↓
Year Founded
1955
School Calendar
School Rankings
Arroyo High School ranks within the top 50% 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 0.65, which is more 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
#2981 out of 9523 schools
(Top 50%)
(Top 50%)
Showing 2012–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
35%
34%
Showing 2012–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
59%
47%
Showing 2011–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
39%
29%
Student-Teacher Ratio
25:1
21:1
Showing 2013–2025. Full 39-year historical data available below ↓
Asian
31%
12%
Showing 2015–2025. Full 38-year historical data available below ↓
Hispanic
50%
56%
Showing 2015–2025. Full 38-year historical data available below ↓
Black
6%
5%
Showing 2015–2025. Full 38-year historical data available below ↓
White
7%
20%
Showing 2015–2025. Full 38-year historical data available below ↓
Hawaiian
2%
n/a
Two or more races
4%
6%
Showing 2015–2025. Full 17-year historical data available below ↓
All Ethnic Groups
Showing 2015–2025. Full 38-year historical data available below ↓
Graduation Rate
95%
86.2%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(22-23)18.6%
27.7%
Eligible for Free Lunch
47%
54%
Showing 2015–2025. Full 34-year historical data available below ↓
Eligible for Reduced Lunch
18%
8%
Showing 2015–2025. Full 27-year historical data available below ↓
School Statewide Testing
School District Name
Sports
Colors
White, Black, Red
School Mascot
Don
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Arroyo High School's ranking?
Arroyo High School is ranked #2981 out of 9,523 schools, which ranks it among the top 50% of public schools in California.
What schools are Arroyo High School often compared to?
Arroyo High Schoolis often viewed alongside schools like San Lorenzo High School, Kipp King Collegiate High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
35% of students have achieved math proficiency (compared to the 34% CA state average), while 59% 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 95%, which is higher than the California state average of 86.2%.
How many students attend Arroyo High School?
1,499 students attend Arroyo High School.
What is the racial composition of the student body?
50% of Arroyo High School students are Hispanic, 31% of students are Asian, 7% of students are White, 6% of students are Black, 4% of students are Two or more races, and 2% of students are Hawaiian.
What is the student-teacher ratio of Arroyo High School?
Arroyo High School has a student ration of 25:1, 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 San Lorenzo Unified School District.
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