Top Rankings
Castro Valley Unified School District ranks among the top 20% of public school district in California for:
Category
Attribute
Overall Rank
Highest overall rank (Top 10%)
Math Proficiency
Highest math proficiency (Top 10%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 20%)
Science Proficiency
Highest science proficiency (Top 20%)
Graduation Rate
Highest graduation rate (Top 5%)
Diversity
Most diverse schools (Top 1%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2026 school year, there are 4 public high schools serving 3,029 students in Castro Valley Unified School District. This district's average high testing ranking is 10/10, which is in the top 10% of public high schools in California.
Public High Schools in Castro Valley Unified School District have an average math proficiency score of 49% (versus the California public high school average of 28%), and reading proficiency score of 72% (versus the 51% statewide average).
Public High School in Castro Valley Unified School District have a Graduation Rate of 95%, which is more than the California average of 86%.
The school with highest graduation rate is Castro Valley High School, with 96% graduation rate. Read more about public school graduation rate statistics in California or national school graduation rate statistics.
Minority enrollment is 79% of the student body (majority Asian), which is equal to the California public high school average of 79% (majority Hispanic).
Overview
This School District
This State (CA)
# Schools
16 Schools
2,795 Schools
# Students
9,548 Students
2,122,733 Students
# Teachers
416 Teachers
101,050 Teachers
Student-Teacher Ratio
23:1
23:1
Student By Grade
District Rank
Castro Valley Unified School District, which is ranked #158 of all 1,904 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 stayed relatively flat over five school years.
Overall District Rank
#161 out of 1932 school districts
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
58%
34%
Reading/Language Arts Test Scores (% Proficient)
68%
47%
Science Test Scores (% Proficient)
50%
29%
Graduation Rate
95%
87%
Chronically Absent Students
(2022-23)17.9%
27.7%
Students by Ethnicity:
Diversity Score
0.74
0.63
% American Indian
n/a
1%
% Asian
38%
12%
% Hispanic
25%
56%
% Black
4%
5%
% White
19%
21%
% Hawaiian
n/a
n/a
% Two or more races
14%
5%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $16,915 in this school district is less than the state median of $20,100. The school district revenue/student has stayed relatively flat over four school years.
The school district's spending/student of $17,461 is less than the state median of $18,512. The school district spending/student has declined by 10% over four school years.
Total Revenue
$162 MM
$116,387 MM
Spending
$167 MM
$107,188 MM
Revenue / Student
$16,915
$20,100
Spending / Student
$17,461
$18,512
Best Castro Valley Unified School District Public High Schools (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Castro Valley High School
(Math: 52% | Reading: 78%)
Rank:
Rank:
9/
Top 20%10
19400 Santa Maria Ave.
Castro Valley, CA 94546
(510) 537-5910
Castro Valley, CA 94546
(510) 537-5910
Gr: 9-12 | 2,874 students Student-teacher ratio: 24:1 Minority enrollment: 79%
Rank: #22.
Castro Valley Virtual Academy
(Math: 21-39% | Reading: 60-64%)
Rank:
Rank:
7/
Top 50%10
18400 Clifton Way
Castro Valley, CA 94546
(510) 537-3193
Castro Valley, CA 94546
(510) 537-3193
Gr: K-12 | 45 students Student-teacher ratio: 11:1 Minority enrollment: 75%
Rank: #33.
Redwood Continuation High School
Alternative School
(Math: ≤10% | Reading: 20-29%)
Rank:
Rank:
1/
Bottom 50%10
18400 Clifton Way
Castro Valley, CA 94546
(510) 537-3193
Castro Valley, CA 94546
(510) 537-3193
Gr: 9-12 | 92 students Student-teacher ratio: 13:1 Minority enrollment: 83%
Rank: n/an/a
Roy A. Johnson High School
Special Education School
18400 Clifton Way
Castro Valley, CA 94546
(510) 537-3000
Castro Valley, CA 94546
(510) 537-3000
Gr: 9-12 | 18 students Student-teacher ratio: 9:1 Minority enrollment: 94%
Recent Articles
Gifted, Honors, and Advanced Tracks: Are They Accessible or Just Advertised?
Learn how to evaluate gifted, honors, and advanced academic programs in public schools, including admission criteria, equity, and the questions every parent should ask.
Algebra Readiness: What Parents Should Ask Before Middle School
Discover how to determine if your child is ready for algebra before middle school, including the questions parents should ask and the skills students need to succeed.
How to Evaluate Reading Instruction in Your Zoned Elementary School
Learn how to evaluate reading instruction in your neighborhood elementary school by recognizing effective literacy practices, asking the right questions, and understanding what quality reading instruction looks like.
