School overview
At a glance
Reported students
18
NCES CCD 2024–25, where reported
Teachers (FTE)
2
NCES CCD 2024–25
Student–teacher ratio
9:1
Calculated, not a class-size measure
Grades served
09–12
NCES preliminary directory 2025–26
School benchmarks
California high enrollment
10th percentile
Compared with 2,196 same-level schools reporting enrollment.
District median enrollment
515
Roy A. Johnson High: 18 reported students.
State peer staffing position
10th percentile
9:1 reported; state peer median 19.2:1. Ratio is not class size.
Profile interpretation
What the reported data says about Roy A. Johnson High
Roy A. Johnson High is a public high school serving grades 09–12 in Castro Valley. It is one of 16 current school records connected to Castro Valley Unified. NCES reports 18 students for 2024–25.
Among 2,196 high schools in California with comparable records, this school is smaller than the reported median of 414.5 students. Its enrollment is at approximately the 10th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 9:1, below the California median of 19.2:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.
The two largest reported race and ethnicity groups are Hispanic or Latino (33.3%) and Asian (33.3%). English learners represent 16.7% of enrollment. Students served under IDEA represent 100%. These figures help families understand who the school serves; they are not rating inputs.
Turn data into a school visit
Questions worth asking Roy A. Johnson High
- 1How do the reported 9:1 student–teacher ratio and 2 teacher FTE translate into actual class sizes by grade?
- 2Have the reported academic programs changed since the 2021–22 CRDC collection?
- 3How are the school's 0 counselor FTE allocated across grades and student needs?
- 4What meal assistance, transportation, after-school, and family-support services are currently available?
Student context
Enrollment needs
- English learners
- 16.7%
- Students with disabilities
- 100%
- Free/reduced-price lunch
- 50%
- Lunch program
- Missing
People available to students
Support staff
- Counselors (FTE)
- 0
- Nurses (FTE)
- 0.05
- Psychologists (FTE)
- 0.5
- Social workers (FTE)
- 0.5
Student demographics
Race and ethnicity share of reported enrollment
- White5.6%
- Hispanic33.3%
- Black5.6%
- Asian33.3%
- American Indian / Alaska Native0%
- Native Hawaiian / Pacific Islander0%
- Multiracial22.2%
Race/ethnicity: NCES CCD 2024–25 where reported, otherwise CRDC 2021–22. English learner and disability context: CRDC 2021–22. Privacy rules can produce missing values.
Learning opportunities
Programs reported by the school
Advanced Placement
Not reported as offered
Gifted and talented
Not reported as offered
Computer science
Not reported as offered
Program availability is from CRDC 2021–22 and can change. Confirm current courses and eligibility with the school.
Continue exploring
Other schools in Castro Valley Unified
Start with campuses at the same school level or with similar reported enrollment.
Redwood Continuation High
High · Grades 09–12
92 reported students
Castro Valley High
High · Grades 09–12
2,874 reported students
Alma Preschool
Other · Grades M–M
Not reported reported students
Castro Valley Virtual Academy
Other · Grades KG–12
45 reported students
Palomares Elementary
Elementary · Grades KG–05
135 reported students
Jensen Ranch Elementary
Elementary · Grades KG–05
373 reported students