Enrollment
18
High
DISTRICT 995 · STATE 838
SCHOOL COMMUNITY·CASTRO VALLEY UNIFIED·NCES 060780000750
Roy A. Johnson High
18400 Clifton Way, Castro Valley, CA 94546 · (510) 537-3000 · Alameda County
GRADES 09–12HIGH21-SUBURBTITLE ISPECIAL EDUCATION SCHOOL18 STUDENTS
·
allk12 Grade
Not graded
Schools serving specialized populations are not graded, because state test results are not a fair comparison for them. How grades work
Student : Teacher
9.0:1
2 FTE teachers
DISTRICT 15.0:1 · STATE 18.2:1
Free / Reduced Lunch
50%
9 students
DISTRICT 41% · STATE 65%
Community
0
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 12 | 18 | 100% |
Student demographics
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
BeatsExpectations
Not computed for this schoolBeatsExpectations is not computed for specialized-population schools (schools for the deaf or blind, therapeutic and behavioral-health placements, juvenile-justice and alternative-education settings, and similar). State ELA/Math proficiency rates are not a comparable metric for these populations, so a demographically-adjusted residual against general-enrollment peers would be misleading. About the methodology →
Where Roy A. Johnson High ranks
Among high schools| Measure | This school | In California | In Alameda County |
|---|---|---|---|
| Enrollment ranked largest first | 18 | #1,949 of 2,093 | #83 of 85 |
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
18
-3 (-14%) vs 2020
-18% since 1990-91, when it was 22
Student : Teacher
9.0:1
was 10.5:1
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 | 18 | 2 | 9.0:1 | 50% (9) |
| 2023-24 | 20 | 1.8 | 11.1:1 | 45% (9) |
| 2022-23 | 24 | 4 | 6.0:1 | 33% (8) |
| 2020-21 | 21 | 2 | 10.5:1 | 24% (5) |
| 2017-18 | 13 | 2 | 6.5:1 | 23% (3) |
| 2015-16 | 27 | 2 | 13.5:1 | 19% (5) |
| 2010-11 | 16 | N/A | N/A | 0% (0) |
| 2000-01 | 10 | 1 | 10.0:1 | 0% (0) |
| 1990-91 | 22 | 3 | 7.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Roy A. Johnson High.
Since 2017-18: students up 38% (13 to 18); teachers unchanged (2 to 2).
About Roy A. Johnson High
This page covers Roy A. Johnson High, a small high school in Castro Valley, California. Its 18 students are spread across grades 9 through 12. The typical figure for high schools in California is about 838 students.
The district, Castro Valley Unified, operates 15 schools serving 9,548 students.
Enrollment at Roy A. Johnson High is mixed, with Hispanic students the largest group at 33%. It is also 33% Asian, 22% multiracial, 6% White, and 6% Black. For comparison, the population of Alameda County is roughly 23% Hispanic.
Federal staffing data show 2 full-time-equivalent teachers at Roy A. Johnson High and a ratio of 9.0:1. That ratio is under the 18.2:1 average for high schools in California. Free or reduced-price lunch eligibility covers 50% of students. That is close to the 49% average for public schools in Alameda County.
Recent Census Bureau figures for Alameda County show that median household income is about $129,367, the share of adults with a bachelor's degree or higher is 52%, and about 6% of people live in poverty. Roy A. Johnson High is one of 394 public schools in Alameda County, which together enroll about 210,511 students.
The closest public school to Roy A. Johnson High is Redwood Continuation High, less than a tenth of a mile away. Within five miles of Roy A. Johnson High, there are at least 8 other public schools.
Roy A. Johnson High has an NCES locale of Suburb: Large.
Between 2020-21 and 2024-25, the student count dropped from 21 to 18. Students per teacher fell from 10.5 in 2020-21 to 9.0 in 2024-25.
Community posts for Roy A. Johnson High can cover sports schedules, lunch menus, and spirit week. Alumni can share how the school prepared them.
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
- Castro Valley HighHigh · 2,874 students
- Canyon MiddleMiddle · 1,418 students
- Creekside MiddleMiddle · 754 students
- Independent ElementaryElementary · 662 students
- Proctor ElementaryElementary · 613 students
- Vannoy ElementaryElementary · 536 students
Other schools in Castro Valley
- Castro Valley HighHigh · 2,874 students
- Canyon MiddleMiddle · 1,418 students
- Creekside MiddleMiddle · 754 students
- Independent ElementaryElementary · 662 students
- Proctor ElementaryElementary · 613 students
- Vannoy ElementaryElementary · 536 students
Nearby schools
- Redwood Continuation High0.0 mi · 92
- Castro Valley Virtual Academy0.0 mi · 45
- Chabot Elementary0.4 mi · 496
- Stanton Elementary0.9 mi · 515
- Castro Valley High1.1 mi · 2,874
- Proctor Elementary1.1 mi · 613
Frequently asked questions
About Roy A. Johnson HighWhat is the total enrollment at Roy A. Johnson High?
Roy A. Johnson High enrolls approximately 18 students in grades 09-12.
Is Roy A. Johnson High an elementary, middle, or high school?
Roy A. Johnson High is a high school covering grades 09-12.
How many teachers does Roy A. Johnson High have?
Roy A. Johnson High employs 2 FTE teachers, for a student-to-teacher ratio of 9.0:1.
How diverse is Roy A. Johnson High?
Roy A. Johnson High reports a student body of 6% White, 33% Hispanic, 6% Black, 33% Asian, 22% Two or more.
Who oversees Roy A. Johnson High?
Roy A. Johnson 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.