Redwood High School is an alternative/continuation public high school in Castro Valley, California, United States. It is the only alternative/continuation high school in Castro Valley, and is one of only two high schools in Castro Valley, the other being Castro Valley High School.
Roy A. Johnson High School serves 18 students in grades 9-12.
The student-teacher ratio of 9:1 is lower than the California state level of 21:1.
Minority enrollment is 94% of the student body (majority Hispanic and Asian), which is higher than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- School Type: Special education school
- Grades: 9-12
- Enrollment: 18 students
- Student-Teacher Ratio: 9:1
- Minority Enrollment: 94%
- Graduation Rate: ≤1%
- 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 18 students has declined by 14% 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
18 students
Total Classroom Teachers
2 teachers
School Rankings
The diversity score of Roy A. Johnson High School is 0.73, 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
9:1
21:1
American Indian
n/a
1%
Asian
33%
12%
Hispanic
33%
56%
Black
6%
5%
White
6%
20%
Hawaiian
n/a
n/a
Two or more races
22%
6%
All Ethnic Groups
Graduation Rate
(10-11)≤1%
83%
Eligible for Free Lunch
22%
54%
Eligible for Reduced Lunch
28%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
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?
18 students attend Roy A. Johnson High School.
What is the racial composition of the student body?
33% of Roy A. Johnson High School students are Asian, 33% of students are Hispanic, 22% of students are Two or more races, 6% of students are Black, and 6% of students are White.
What is the student-teacher ratio of Roy A. Johnson High School?
Roy A. Johnson High School has a student ration of 9:1, 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
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.
