For the 2025-26 school year, there are 8 private preschools serving 1,082 students in Altadena, CA.
The top-ranked private preschools in Altadena, CA include Pasadena Waldorf School and Pasadena Waldorf High School.
The average acceptance rate is 80%, which is lower than the California private preschool average acceptance rate of 82%.
13% of private preschools in Altadena, CA are religiously affiliated (most commonly Christian).
Top-Ranked Altadena Private Preschools (2025-26)
School
Location
Quick Facts
2046 Allen Avenue
Altadena, CA 91001
(626) 657-2742
Altadena, CA 91001
(626) 657-2742
Gr: NS-6 | 169 students Extracurrculars: 8 Tuition listed
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
Firehouse Preschool
Daycare / Preschool
1923 Allen Ave
Altadena, CA 91001
(626) 798-2865
Altadena, CA 91001
(626) 798-2865
Gr: PK-K | 24 students
Meher Montessori School
Montessori School
943 E Altadena Drive
Altadena, CA 91001
(626) 798-1171
Altadena, CA 91001
(626) 798-1171
Gr: PK-K | 30 students
Princeton Montessori School
All-girls | Montessori School
922 E Mendocino St
Altadena, CA 91001
(626) 794-2244
Altadena, CA 91001
(626) 794-2244
Gr: NS | 12 students Tuition listed
Sahag-mesrob Armenian Christian School
(Christian)
2501 Maiden Ln
Altadena, CA 91001
(626) 798-5020
Altadena, CA 91001
(626) 798-5020
Gr: PK-8 | 182 students Tuition listed
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
Oak Knoll Montessori School (Closed 2025)
Montessori School
3544 Canon Blvd
Altadena, CA 91001
(626) 345-9929
Altadena, CA 91001
(626) 345-9929
Gr: PK | 112 students
Frequently Asked Questions
What are the top-ranked private preschools in Altadena, CA?
The top-ranked private preschools in Altadena, CA include Pasadena Waldorf School and Pasadena Waldorf High School.
How many private preschools are located in Altadena?
8 private preschools are located in Altadena.
How diverse are private preschools in Altadena?
Altadena private preschools are approximately 48% minority students, which is lower than the California private school average of 50%.
What percentage of private preschools are religiously affiliated in Altadena?
13% of private preschools in Altadena are religiously affiliated (most commonly Christian).
Recent Articles
How to Start a Private School in 2025: Complete K–12 Guide
A practical, updated guide to starting a private K–12 school in 2025, covering legal steps, planning, finance, and enrollment strategy.
Why Private School? Key Considerations for Families in 2025
Learn why families choose private school in 2025, including academics, class size, safety, tuition trends, and admissions guidance.
Scholarships & Financial Aid for 2026 Entry
A comprehensive guide to scholarships, bursaries, and financial aid options for 2026 entry at U.S. private schools.
