Charter Oak Unified School District

20240 East Cienega Ave.
Covina, CA 91724-1227
(District boundaries shown in map)
7/
10
Top 50%

Top Rankings

Charter Oak Unified School District ranks among the top 20% of public school district in California for:

Category
Attribute
Graduation Rate
Highest graduation rate (Top 5%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2026-27 school year, there are 6 public elementary schools serving 2,355 students in Charter Oak Unified School District. This district's average elementary testing ranking is 7/10, which is in the top 50% of public elementary schools in California.
Public Elementary Schools in Charter Oak Unified School District have an average math proficiency score of 38% (versus the California public elementary school average of 36%), and reading proficiency score of 48% (versus the 46% statewide average).
Minority enrollment is 88% of the student body (majority Hispanic), which is more than the California public elementary school average of 80% (majority Hispanic).

Overview

This School District
This State (CA)
# Schools
10 Schools
7,664 Schools
# Students
4,296 Students
3,815,621 Students
# Teachers
194 Teachers
173,890 Teachers
Student-Teacher Ratio
22:1
22:1

Student By Grade

District Rank

Charter Oak Unified School District, which is ranked #607 of all 1,903 school districts in California (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 95% has decreased from 96% over five school years.
This School District
State Average (CA)
#587 out of 1932 school districts
(Top 50%)
38%
34%
49%
47%
24%
29%
95%
86.2%
(2022-23)
28.4%
27.7%

Students by Ethnicity:

0.42
0.64
% American Indian
n/a
n/a
% Asian
7%
12%
% Hispanic
75%
56%
% Black
3%
5%
% White
12%
20%
% Hawaiian
n/a
n/a
% Two or more races
3%
7%
All Ethnic Groups

District Revenue and Spending

The revenue/student of $22,423 in this school district is less than the state median of $26,022. The school district revenue/student has grown by 16% over four school years.
The school district's spending/student of $19,868 is less than the state median of $22,604. The school district spending/student has grown by 12% over four school years.
This School District
This State (CA)
Total Revenue
$96 MM
$150,628 MM
Spending
$85 MM
$130,845 MM
Revenue / Student
$22,423
$26,022
Spending / Student
$19,868
$22,604

Best Charter Oak Unified School District Public Elementary Schools (2026-27)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Washington Elementary School
(Math: 50-54% | Reading: 65-69%)
Rank:
9/
10
Top 20%
325 West Gladstone
Glendora, CA 91740
(626) 914-2704
Gr: K-6 | 421 students Student-teacher ratio: 23:1 Minority enrollment: 84%
Rank: #22.
Willow Elementary School
(Math: 45-49% | Reading: 55-59%)
Rank:
8/
10
Top 30%
1427 South Willow
Glendora, CA 91740
(626) 914-5839
Gr: K-6 | 388 students Student-teacher ratio: 23:1 Minority enrollment: 84%
Rank: #33.
Cedargrove Elementary School
(Math: 35% | Reading: 47%)
Rank:
7/
10
Top 50%
1209 North Glendora Ave.
Covina, CA 91724
(626) 966-8675
Gr: K-6 | 569 students Student-teacher ratio: 25:1 Minority enrollment: 91%
Rank: #44.
Badillo Elementary School
(Math: 36% | Reading: 39%)
Rank:
6/
10
Top 50%
1771 East Old Badillo Ave.
Covina, CA 91724
(626) 966-1753
Gr: K-6 | 442 students Student-teacher ratio: 22:1 Minority enrollment: 94%
Rank: #55.
Glen Oak Elementary School
(Math: 30% | Reading: 35-39%)
Rank:
5/
10
Bottom 50%
1000 North Sunflower Ave.
Covina, CA 91724
(626) 331-5341
Gr: K-6 | 428 students Student-teacher ratio: 21:1 Minority enrollment: 87%
Rank: #66.
Oak Knoll Alternative
Alternative School
(Math: 10-14% | Reading: 45-49%)
Rank:
4/
10
Bottom 50%
1505 South Sunflower Ave.
Glendora, CA 91740
(626) 852-7972
Gr: K-12 | 107 students Student-teacher ratio: 36:1 Minority enrollment: 86%

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Quick Facts (2026-27)

  • District size: 10 schools
  • Grades: K-12
  • Enrollment: 4,296 students
  • Student-Teacher Ratio: 22:1
  • Minority Enrollment: 88%
  • : 95% (Top 5% in CA)
  • : Top 50%
  • : 38% (Top 30%)
  • : 49% (Top 50%)
  • : 24% (Btm 50%)
  • Source: National Center for Education Statistics (NCES), CA Dept. of Education

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