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What do you wish you knew before starting at Castro Valley High?
Community prompt from u/allk12. Replies below.
Enrollment
2,874
High
DISTRICT 995 · STATE 838
SCHOOL COMMUNITY·CASTRO VALLEY UNIFIED·NCES 060780000742
Castro Valley High
19400 Santa Maria Ave., Castro Valley, CA 94546 · (510) 537-5910 · Alameda County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL2,874 STUDENTS
B+
allk12 Grade
Scored higher than 65% of California public high schools
- A-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- BBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- FThree-year trend Change in reading and math proficiency over the last three test years.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded California public high schools
Student : Teacher
23.6:1
122 FTE teachers
DISTRICT 15.0:1 · STATE 18.2:1
Free / Reduced Lunch
40%
1,151 students
DISTRICT 41% · STATE 65%
Community
6
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 748 | 26% |
| Grade 10 | 740 | 26% |
| Grade 11 | 709 | 25% |
| Grade 12 | 677 | 24% |
Student demographics
74%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 74% · STATE 62% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
68.1%
CA avg 49.1% . -4.9pp since 2014
Math
49.4%
CA avg 37.7% . -1.6pp since 2014
What this means: On the CAASPP, California's statewide test, about 68 of every 100 students at this school read and write at grade level and about 49 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are down about 5 points since 2014, while math scores are down about 2 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 33.5% | 34.6% | 16.7% | 15.2% |
| Math | 27.2% | 22.2% | 22.3% | 28.3% |
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.
CAASPP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 68.1% | 49.4% |
| 2023-24 | 66.3% | 49.0% |
| 2022-23 | 72.1% | 52.3% |
| 2021-22 | 78.3% | 58.5% |
| 2020-21 | 85.0% | 86.3% |
| 2018-19 | 67.9% | 59.8% |
| 2017-18 | 70.5% | 60.0% |
| 2016-17 | 70.4% | 57.1% |
| 2015-16 | 67.0% | 51.0% |
| 2014-15 | 73.0% | 51.0% |
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
58.2%
composite math + reading, all grades
Predicted
56.1%
based on CA schools with similar FRL share
Beats by
+2.1pp
above demographic expectation
What this means: About 58% of students here test proficient in math and reading, compared with the roughly 56% typical for California schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among California's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Castro Valley High
Castro Valley High's state test result (58.2% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Castro Valley High this school | 2,874 | 40.0% | 58.2% |
| Pleasant Grove High Elk Grove | 2,536 | 33.5% | 63.4% |
| Arnold O. Beckman High Irvine | 2,776 | 44.5% | 72.7% |
| Franklin High Elk Grove | 2,650 | 39.9% | 50.1% |
| Brea Olinda High Brea | 1,676 | 41.6% | 58.0% |
| Alameda High Alameda | 1,868 | 30.4% | 66.5% |
Matched among California high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Castro Valley High ranks
Among high schools| Measure | This school | In California | In Alameda County |
|---|---|---|---|
| State test proficiency ranked highest first | 58.2% | #198 of 1,052 | #13 of 35 |
| Math proficiency ranked highest first | 49.4% | #180 of 1,056 ▼ 24 | #12 of 35 no change |
| Reading proficiency ranked highest first | 68.1% | #286 of 1,056 ▲ 19 | #13 of 35 no change |
| 3-year test score change ranked biggest drop first | -9.6pp | #46 of 1,044 | #2 of 34 |
| Enrollment ranked largest first | 2,874 | #40 of 2,093 | #3 of 85 |
| Students per teacher ranked fewest first | 23.6:1 | #1,065 of 1,352 | #41 of 55 |
| Diversity index ranked most diverse first | 74.4% | #30 of 1,351 | #8 of 55 |
| Free and reduced lunch ranked highest share first | 40.0% | #1,287 of 1,575 | #51 of 68 |
| Enrollment change since 2017-18 ranked steepest decline first | -2.0% | #741 of 802 | #24 of 27 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
2,874
+233 (+9%) vs 2020
+79% since 1990-91, when it was 1,609
Student : Teacher
23.6:1
was 22.8:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 2,874 | 121.8 | 23.6:1 | 40% (1,151) |
| 2023-24 | 2,842 | 119.2 | 23.8:1 | 40% (1,124) |
| 2022-23 | 2,799 | 119.9 | 23.4:1 | 35% (975) |
| 2020-21 | 2,641 | 116 | 22.8:1 | 20% (520) |
| 2017-18 | 2,934 | 121.8 | 24.1:1 | 24% (698) |
| 2015-16 | 2,917 | 118 | 24.7:1 | 20% (593) |
| 2010-11 | 2,962 | N/A | N/A | 22% (642) |
| 2000-01 | 2,323 | 96 | 24.2:1 | 7% (162) |
| 1990-91 | 1,609 | 72 | 22.4:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Castro Valley High.
Since 2017-18: students down 2% (2,934 to 2,874); teachers unchanged (121.8 to 121.8).
About Castro Valley High
Castro Valley, California, is home to Castro Valley High, a high-enrollment high school. Students in grades 9 through 12 make up the school's enrollment of 2,874 students. That compares with an average of about 838 students for high schools in California.
Castro Valley Unified includes 15 schools. Together they enroll 9,548 students.
Asian students account for 36% of enrollment at Castro Valley High, more than any other group. Other groups make up 25% Hispanic, 21% White, 12% multiracial, and 5% Black. Alameda County residents are about 33% Asian, a similar share. Measured by the diversity index, the student body scores 74%.
Its ratio of 23.6:1 is based on 121.8 full-time-equivalent teachers. High schools in California average 18.2:1, 5.4 fewer students per teacher than here. The share of students eligible for free or reduced-price lunch is 40%. Public schools in Alameda County average 49%.
Castro Valley High holds a B+ allk12 Grade, placing it above 65% of California public high schools.
Castro Valley High posts an average proficiency rate across its state test results of 58.2%, compared with a predicted 56.1%. It is not in the top or bottom 10% of California schools on BeatsExpectations.
American Community Survey estimates for Alameda County show that the median household earns about $129,367 a year, about 52% of adults have at least a bachelor's degree, and the poverty rate is about 6%. Across Alameda County, 394 public schools serve about 210,511 students.
Castro Valley Elementary sits about 0.5 miles from Castro Valley High. Inside a five-mile radius, there are at least 8 other public schools. The nearest schools with test data average 66.6%, higher than Castro Valley High's 58.2%.
The federal government classifies Castro Valley High's location as Suburb: Large.
A 9% rise took enrollment from 2,641 in 2020-21 to 2,874 in 2024-25.
Use the discussion section to ask about special education services, counseling, and support programs at Castro Valley High. You can also rate the school on this page.
Alameda County at a glance
View full county profilePopulation
1,649,473
Census ACS
Median income
$129,367
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
394
210,511 students
Quick facts
Related schools
Other schools in Castro Valley Unified
- Canyon MiddleMiddle · 1,418 students
- Creekside MiddleMiddle · 754 students
- Independent ElementaryElementary · 662 students
- Proctor ElementaryElementary · 613 students
- Vannoy ElementaryElementary · 536 students
- Marshall ElementaryElementary · 515 students
Other schools in Castro Valley
- Canyon MiddleMiddle · 1,418 students
- Creekside MiddleMiddle · 754 students
- Independent ElementaryElementary · 662 students
- Proctor ElementaryElementary · 613 students
- Vannoy ElementaryElementary · 536 students
- Marshall ElementaryElementary · 515 students
Nearby schools
- Castro Valley Elementary0.5 mi · 502
- Marshall Elementary0.7 mi · 515
- Chabot Elementary0.7 mi · 496
- Proctor Elementary0.9 mi · 613
- Creekside Middle0.9 mi · 754
- Stanton Elementary1.0 mi · 515
Frequently asked questions
About Castro Valley HighWhat is the total enrollment at Castro Valley High?
Castro Valley High enrolls approximately 2,874 students in grades 09-12.
What grades does Castro Valley High serve?
Castro Valley High serves grades 09-12.
How many students per teacher at Castro Valley High?
Approximately 23.6:1 students per teacher at Castro Valley High.
How diverse is Castro Valley High?
Castro Valley High reports a student body of 21% White, 25% Hispanic, 5% Black, 36% Asian, 12% Two or more.
Who oversees Castro Valley High?
Castro Valley High is overseen by Castro Valley Unified in Alameda County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.