Enrollment
18
California · 2024-25 NCES data
High school (grades 9-12) · Castro Valley, CA
Roy a. Johnson High
Federal NCES profile for Roy a. Johnson High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 31/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 060780000750
👥 S:T ratio 82
📚 AP courses 10
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Roy a. Johnson High earns 31/100 on the Resource Investment Index, even as it posts class sizes smaller than 99% of California schools. It is also one of the smallest schools in California.
- #2 of 3
- high schools in Castro Valley · Resource Index
- 31
- Resource Index · Lower
- 4.5:1
- small classes for California
- 25.0%
- free-lunch eligible
Roy a. Johnson High has class sizes smaller than 99% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Roy a. Johnson High ranks #2 of 3 high schools in Castro Valley, CA.
School address
District: Castro Valley Unified · California
NCES ID 060780000750 Verify on NCES CCD record →
Teachers (FTE)
4.0
Federal CCD staff survey
Students per teacher
4.5:1
vs 21.5:1 California avg
-79% vs state
Free-lunch eligible
25.0%
vs 55.5% California avg
-55% vs state
Student-teacher ratio in context
How Roy a. Johnson High compares with California and U.S. medians
What stands out at Roy a. Johnson High
Roy a. Johnson High is a small high school in Castro Valley, California, enrolling 18 students.
Classes run notably small here: at 4.5:1, Roy a. Johnson High is leaner than roughly 99% of California schools and 79% under the state's 21.5:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat below the state's typical profile, with 25.0% of students eligible for free meals.
This is a small campus: fewer students than 97% of California schools, with 18 enrolled.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 35 statewide peers matched on enrollment and economic need, it ranks mid-pack at #18.
Its student body is led by Hispanic or Latino (33%) and Asian (33%), more mixed than most schools in the state (diversity index 72/100).
No Advanced Placement courses are reported for this campus in the federal data.
Chronic absenteeism is elevated: 50.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Castro Valley Unified spends $13,179 per pupil, 20% below the California average, a leaner-resourced district than most.
Among Castro Valley's high schools, it stands alongside Castro Valley High (2,874 students): Roy a. Johnson High is smaller than that campus by headcount and runs leaner classes (4.5:1 vs 24.2:1).
Castro Valley Unified also operates Castro Valley High (2,874 students) and Canyon Middle (1,418 students) alongside Roy a. Johnson High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Roy a. Johnson High compares
Roy a. Johnson High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 4.5:1 | ▼ 79% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 25.0% | ▼ 55% | 55.5% | 51.7% |
| Enrollment | 18 | top 97% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
4.5:1
Leaner classes than 99% of US schools, among the more generously staffed nationally.
18
Bigger than 2% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
25.0%
free-lunch eligible
- 55% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
4.5:1
students per teacher
- 79% below state mean
Top 1% in California - lower ratio than 99% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
50.0%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$13,179
per pupil, district-wide
- below California avg of $16,509
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Hispanic or Latino 33.3%
Asian 33.3%
Two or More 22.2%
White 5.6%
African American 5.6%
Largest group: Asian at 33.3% of enrollment.
Student-body diversity index 72.3/100
Simpson diversity index - at 72.3, Roy a. Johnson High is more mixed than the California school average of 46.0.
Programs
AP program Not offered
Funding & spending
District-wide per-pupil expenditure for Castro Valley Unified, which includes Roy a. Johnson High.
$13,179
Per student
-20%
vs California
Avg $16,509
-21%
vs U.S.
Avg $16,593
Revenue mix
Local 26.6%
State 62.3%
Federal 11.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Roy a. Johnson High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Castro Valley High | Larger | Similar economic need | Higher S:T ratio |
| Canyon Middle | Larger | Similar economic need | Higher S:T ratio |
| Creekside Middle | Larger | Similar economic need | Higher S:T ratio |
| Independent Elementary | Larger | Similar economic need | Higher S:T ratio |
| Proctor Elementary | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Roy a. Johnson High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,874
- Students per teacher
- 24.2:1
- Resource Index
- 29/100
- Enrollment
- 1,418
- Students per teacher
- 23.2:1
- Resource Index
- 23/100
- Enrollment
- 754
- Students per teacher
- 22.2:1
- Resource Index
- 31/100
- Enrollment
- 662
- Students per teacher
- 24.5:1
- Resource Index
- 28/100
- Enrollment
- 613
- Students per teacher
- 25.5:1
- Resource Index
- 23/100
Similar high schools in Castro Valley
2 comparable high schools (grades 9-12) serving the same city.
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~18 students)
Similar student-teacher ratio (~4.5:1)
Next steps
Verify locally before acting on Roy a. Johnson High's federal record.
- Compare Roy a. Johnson High against another school. Compare schools
- Castro Valley Unified's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Roy a. Johnson High
How many students attend Roy a. Johnson High?
Roy a. Johnson High has 18 students enrolled. It is a high school in Castro Valley, CA.
What is the student-teacher ratio at Roy a. Johnson High?
The student-teacher ratio at Roy a. Johnson High is 4.5:1, which is 79% lower than the California average of 21.5:1 and 71% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Roy a. Johnson High?
25.0% of students at Roy a. Johnson High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Roy a. Johnson High?
The largest demographic group at Roy a. Johnson High is Asian at 33.3% of enrollment, in Castro Valley, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 72.3/100.
What is the Resource Investment Index for Roy a. Johnson High?
Roy a. Johnson High has a Resource Investment Index of 31/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Roy a. Johnson High rank among high schools in Castro Valley?
By Resource Investment Index, Roy a. Johnson High ranks #2 of 3 high schools in Castro Valley, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Castro Valley on the city page.
Is Roy a. Johnson High a good school?
Roy a. Johnson High earns 31/100 on the Resource Investment Index, even as it posts class sizes smaller than 99% of California schools. It is also one of the smallest schools in California. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Castro Valley Unified?
Besides Roy a. Johnson High, Castro Valley Unified also operates Castro Valley High (2,874 students), Canyon Middle (1,418 students), and Creekside Middle (754 students). See the Castro Valley Unified district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.