Roy A. Johnson High School serves 20 students in grades 9-12.
The student:teacher ratio of 10:1 is lower than the California state level of 21:1.
Minority enrollment is 75% of the student body (majority Hispanic and Asian), which is lower than the California state average of 80% (majority Hispanic).
Quick Stats (2025)
- School Type: Special education school
- Grades: 9-12
- Enrollment: 20 students
- Student:Teacher Ratio: 10:1
- Minority Enrollment: 75%
- Graduation Rate: ≤1% (Top 1% in CA)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Roy A. Johnson High School ranks among the top 20% of public schools in California for:
Category
Attribute
Diversity
Community Size
Student Attention
School Overview
Roy A. Johnson High School's student population of 20 students has grown by 17% over five school years.
The teacher population of 2 teachers has stayed relatively flat over five school years.
School Type
Grades Offered
Grades 9-12
Total Students
20 students

Gender %

Total Classroom Teachers
2 teachers

School Calendar
School Rankings
The diversity score of Roy A. Johnson High School is 0.77, which is more than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Student : Teacher Ratio
10:1
21:1

American Indian
n/a
1%
Asian
20%
12%

Hispanic
20%
56%

Black
5%
5%

White
25%
20%

Hawaiian
n/a
n/a
Two or more races
30%
6%

All Ethnic Groups



Graduation Rate
(10-11)≤1%
83%
Eligible for Free Lunch
30%
54%

Eligible for Reduced Lunch
15%
8%

School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Profile last updated:
Frequently Asked Questions
What is the graduation rate of Roy A. Johnson High School?
The graduation rate of Roy A. Johnson High School is 1%, which is lower than the California state average of 83%.
How many students attend Roy A. Johnson High School?
20 students attend Roy A. Johnson High School.
What is the racial composition of the student body?
30% of Roy A. Johnson High School students are Two or more races, 25% of students are White, 20% of students are Asian, 20% of students are Hispanic, and 5% of students are Black.
What is the student:teacher ratio of Roy A. Johnson High School?
Roy A. Johnson High School has a student ration of 10:1, which is lower than the California state average of 21:1.
What grades does Roy A. Johnson High School offer ?
Roy A. Johnson High School offers enrollment in grades 9-12
What school district is Roy A. Johnson High School part of?
Roy A. Johnson High School is part of Castro Valley Unified School District.
School Reviews
Review Roy A. Johnson High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles

What are the Benefits of Magnet Schools?
Kate Barrington has compiled this guide to magnet schools, explaining their unique educational approach, core principles, benefits, and potential considerations for parents seeking alternatives within the public school system.

Uniforms: The Pros and Cons
This comprehensive article explores the pros and cons of school uniforms in public schools. It discusses their impact on safety, learning environment, self-expression, and cost-effectiveness. The piece presents statistics, expert opinions, and arguments from both proponents and opponents, helping parents make informed decisions about uniform policies.

Understanding the U.S. Department of Education: Structure, Impact, and Evolution
We explore how the Department of Education shapes American education, from its cabinet-level leadership to its impact on millions of students, written for general audiences seeking clarity on this vital institution.