For the 2025-26 school year, there are 3 private high schools serving 698 students in Altadena, CA.
The top ranked private high schools in Altadena, CA include Pasadena Waldorf High School and Pasadena Waldorf School.
The average acceptance rate is 80%, which is higher than the California private high school average acceptance rate of 78%.
Top Ranked Altadena Private High Schools (2025-26)
School
Location
Quick Facts
Pasadena Waldorf High School
Special Program Emphasis
536 E Mendocino St
Altadena, CA 91001
(626) 204-0786
Altadena, CA 91001
(626) 204-0786
Gr: PK-12 | 307 students Tuition listed
209 E. Mariposa Street
Altadena, CA 91001
(626) 794-9565
Altadena, CA 91001
(626) 794-9565
Gr: NS-12 | 340 students Avg. class size: 20 students Sports: 5 | Extracurrculars: 15 Tuition & acceptance rate listed
Five Acres School![Five Acres School Photo - Our Campus Five Acres School Photo - Our Campus]()

Special Education School
760 Mountain View Street
Altadena, CA 91001
(626) 798-6793
Altadena, CA 91001
(626) 798-6793
Gr: 3-10 | 51 students
Altadena, California Private Schools (Closed)
School
Location
Quick Facts
Hathaway-Sycamores School (Closed 2016)
Alternative School
2933 El Nido Drive
Altadena, CA 91001
(626) 395-7100
Altadena, CA 91001
(626) 395-7100
Gr: K-12
Frequently Asked Questions
What are the top ranked private high schools in Altadena, CA?
The top ranked private high schools in Altadena, CA include Pasadena Waldorf High School and Pasadena Waldorf School.
How many private high schools are located in Altadena?
3 private high schools are located in Altadena.
Recent Articles
A Parent’s Guide to High School Teaching Methods (2025)
Understand modern high school teaching methods in 2025—active learning, blended models, AI tools, and more—to partner with your teen’s school effectively.
Dual Enrollment Bridge: Save Time & Cost in High School–College
How dual enrollment bridges high school and college to save time and money, boost readiness, and improve access to scholarships
Why Private K–12 Families Should Explore Community College Options
Private K–12 families gain by understanding community college: cost savings, dual enrollment pathways, and flexibility for students.


