Charter Oak High School is a four-year comprehensive secondary school in the Charter Oak Unified School District. It is located in the City of Covina, California, in the San Gabriel Valley east of Los Angeles. The school serves 9th, 10th, 11th and 12th graders from the communities of Covina, Azusa and Glendora.
Serving 1,259 students in grades 9-12, Charter Oak 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 30% (which is lower than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 56% (which is higher than the California state average of 47%).
The student-teacher ratio of 22:1 is higher than the California state level of 21:1.
Minority enrollment is 89% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: 9-12
- Enrollment: 1,259 students
- Student-Teacher Ratio: 22:1
- Minority Enrollment: 89%
- Graduation Rate: 96% (Top 10% in CA)
- Overall Testing Rank: Top 50%
- Math Proficiency: 30% (Top 50%)
- Reading Proficiency: 56% (Top 30%)
- Science Proficiency: 18% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Charter Oak High School ranks among the top 20% of public schools in California for:
Category
Attribute
Graduation Rate
School Overview
Charter Oak High School's student population of 1,259 students has declined by 10% over five school years.
The teacher population of 57 teachers has stayed relatively flat over five school years.
School Type
Grades Offered
Grades 9-12
Total Students
1,259 students
Total Classroom Teachers
57 teachers
Year Founded
1959
Colors
Blue, Gold
School Calendar
School Rankings
Charter Oak 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 Charter Oak High School is 0.42, 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
#3485 out of 9523 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
30%
34%
Reading/Language Arts Test Scores (% Proficient)
56%
47%
Science Test Scores (% Proficient)
18%
29%
Student-Teacher Ratio
22:1
21:1
American Indian
1%
1%
Asian
8%
12%
Hispanic
75%
56%
Black
3%
5%
White
11%
20%
Hawaiian
n/a
n/a
Two or more races
2%
6%
All Ethnic Groups
Graduation Rate
96%
87%
Eligible for Free Lunch
52%
54%
Eligible for Reduced Lunch
18%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Charter Oak High School's ranking?
Charter Oak High School is ranked #3485 out of 9,523 schools, which ranks it among the top 50% of public schools in California.
What percent of students have achieved state testing proficiency in math and reading?
30% of students have achieved math proficiency (compared to the 34% CA state average), while 56% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Charter Oak High School?
The graduation rate of Charter Oak High School is 96%, which is higher than the California state average of 87%.
How many students attend Charter Oak High School?
1,259 students attend Charter Oak High School.
What is the racial composition of the student body?
75% of Charter Oak High School students are Hispanic, 11% of students are White, 8% of students are Asian, 3% of students are Black, 2% of students are Two or more races, and 1% of students are American Indian.
What is the student-teacher ratio of Charter Oak High School?
Charter Oak High School has a student ration of 22:1, which is higher than the California state average of 21:1.
What grades does Charter Oak High School offer ?
Charter Oak High School offers enrollment in grades 9-12
What school district is Charter Oak High School part of?
Charter Oak High School is part of Charter Oak Unified School District.
School Reviews
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