Average
#4114 of 9,533 schools in CA
Top 43% in state
Castro Valley High
High School · Castro Valley Unified
PO Box 2146, Castro Valley, CA 94546
Enrollment
2,842
Student-Teacher
23.9:1
Score
6.6
Grades
9th – 12th
Enrollment
2,842
Student-Teacher
23.9:1
Score
6.6
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Castro Valley
#11 of 14
public schools
California high schools
#804 of 1,892
In district
#11 of 14
Castro Valley Unified
Equity
8.5 / 10
Exceptional
About Castro Valley High
Castro Valley High serves 2,842 students in grades 9-12 in Castro Valley, California, making it one of the larger high schools in Alameda County. With 119 full-time equivalent teachers, the school maintains a student-teacher ratio of 23.9:1, which is typical for a comprehensive public high school of this size. Academically, Castro Valley High performs well above average, earning a MySchoolScout rating of 7.3 out of 10 and ranking in the 77th percentile statewide at #2188 among California's 9,566 schools.
The school shows particular strength in English Language Arts, where 66% of students score proficient or above across grade levels. In mathematics, 49% of students achieve proficiency, indicating solid performance with opportunities for continued growth in STEM subjects. The school draws from an affluent community where the median household income reaches $117,808 and 40% of adults hold bachelor's degrees or higher.
With a low poverty rate of 7.5% and median home values around $935,700, the area reflects the economic stability that often supports educational achievement. Castro Valley High operates in a large suburban setting that combines residential neighborhoods with access to the broader Bay Area's educational and professional opportunities.
What Parents Should Know
Castro Valley High is a large school with 2,842 students enrolled. Larger schools typically offer a wider range of academic programs, electives, and extracurricular activities. Parents may want to ask about how the school maintains a sense of community and ensures students don't get lost in the crowd.
The student-teacher ratio at Castro Valley High is 23.9:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.
Score Breakdown
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Castro Valley High — Students at Castro Valley High score 58% proficient, which is above what's typical for similar communities (expected: 53%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
39.5%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 8 test records from CA state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 5.1/10.
How Castro Valley High Compares
See how Castro Valley High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 59% (2019) to 49.02% (2024). Reading/ELA proficiency has remained stable from 67% (2019) to 66.34% (2024).
Location
PO Box 2146, Castro Valley, CA 94546
Nearby Alternatives
Families considering Castro Valley High may also want to explore other high schools in the area. Chabot Elementary (rated 8.1/10, 0.7 miles away), which scores notably higher. Another option is Proctor Elementary (rated 8.0/10, 0.9 miles away), which scores notably higher. Additionally, Marshall Elementary (rated 7.8/10, 0.7 miles away), which scores notably higher. For more schools in Castro Valley, see our Castro Valley schools guide .
Nearby Schools
20 within 1.5 mi| School | Distance | Rating |
|---|---|---|
| REDWOOD CHRISTIAN ELEMENTARY SCHOOL Castro Valley | 0.2 mi | 5.8 |
| OUR LADY OF GRACE CATHOLIC SCHOOL Castro Valley | 0.4 mi | 6.4 |
| Our Lady of Grace School Castro Valley | 0.4 mi | — |
| Castro Valley Elementary Castro Valley | 0.5 mi | 7.3 |
| Marshall Elementary Castro Valley | 0.7 mi | 7.8 |
| Proctor Elementary Castro Valley | 0.9 mi | 8.0 |
| OneSchool Global - San Francisco Castro Valley | 0.7 mi | — |
| ANCHOR EDUCATION Castro Valley | 0.7 mi | 4.7 |
| Chabot Elementary Castro Valley | 0.7 mi | 8.1 |
| Creekside Middle Castro Valley | 0.9 mi | 7.6 |
| Stanton Elementary Castro Valley | 1.0 mi | 7.4 |
| Vannoy Elementary Castro Valley | 1.0 mi | 7.4 |
| Redwood Continuation High Castro Valley | 1.1 mi | 6.0 |
| Roy A. Johnson High Castro Valley | 1.1 mi | — |
| Castro Valley Virtual Academy Castro Valley | 1.1 mi | 6.8 |
| Rising Star Sped Academy Hayward | 1.3 mi | — |
| THE MONTESSORI GIVING TREE Castro Valley | 1.4 mi | — |
| MISSION HILLS SCHOOL Castro Valley | 1.2 mi | 5.1 |
| Canyon Middle Castro Valley | 1.4 mi | 5.8 |
| Independent Elementary Castro Valley | 1.5 mi | 6.7 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94546 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$125,780
Median Home Value
$976,300
Median Rent
$2,506/mo
Population
45,848
College Educated
41.4%
Homeownership
65.8%
Avg Commute
33.7 min
Poverty Rate
7.4%
Median Age
42.1
Community Profile
The community surrounding Castro Valley High has a median household income of $125,780. It is a well-educated community where 41% of adults hold a bachelor's degree or higher. The median home value in the area is $976,300, with a median rent of $2,506/month. The local poverty rate of 7.4% is relatively low. The average commute for residents is 34 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Costa Mesa High Costa Mesa, CA | 6.6 |
| El Camino Real Charter High Woodland Hills, CA | 6.6 |
| Independence High San Jose, CA | 6.6 |
| Inderkum High Sacramento, CA | 6.6 |
| John C. Fremont Senior High Los Angeles, CA | 6.6 |
| Ontario High Ontario, CA | 6.6 |
Frequently Asked Questions
Common questions about Castro Valley High
What grades does Castro Valley High serve?
Castro Valley High serves students in grades 9th through 12th.
How many students attend Castro Valley High?
Castro Valley High has an enrollment of approximately 2,842 students.
What is the student-teacher ratio at Castro Valley High?
The student-teacher ratio at Castro Valley High is 23.9:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Castro Valley High rank in CA?
Castro Valley High is ranked #4114 out of 9,533 schools in CA.
What is Castro Valley High's MySchoolScout rating?
Castro Valley High has a composite rating of 6.6 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Castro Valley High?
Based on the most recent state assessment data, Castro Valley High has 60.8% math proficiency and 71.2% reading/ELA proficiency.
Is Castro Valley High a charter school?
No, Castro Valley High is not a charter school. It is a traditional public school operated by the local school district.
Is Castro Valley High a Title I school?
No, Castro Valley High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Castro Valley High?
39.5% of students at Castro Valley High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Explore More Schools
Neighborhood Context
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 2,842
- Student-Teacher Ratio
- 23.9:1
- Teachers (FTE)
- 119
- Free/Reduced Lunch
- 39.5%
- Type
- regular
- Setting
- Large Suburb
- County
- Alameda County
- Phone
- (510) 537-5910
- Data Year
- 2023–2024
Resources & Links
District
Castro Valley Unified- District Enrollment
- 9,489
- Schools in District
- 16
- Per-Pupil Spending
- $14,627
- District Rank
- #11 of 14
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
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