Private School Review - Established 2003
St. Mary's School
The Healdsburg School Top 3 ยท Highest % Students of Color (CA)
California International School

Best California Private Schools Belonging to International Baccalaureate World School (IB) (2026-27)

For the 2026-27 school year, there are 23 private schools belonging to International Baccalaureate World School (IB) serving 8,199 students in California. You can also find more schools membership associations in California.
The top ranked private schools belonging to International Baccalaureate World School (IB) in California include Al Argam Islamic School & College Preparatory, St. Mary's School, and The Quarry Lane School.
The average tuition cost is $29,565, which is higher than the California private school average tuition cost of $18,350.
26% of private schools belonging to International Baccalaureate World School (IB) in California are religiously affiliated (most commonly Catholic and Christian).

Quick Facts (2026-27)

  • # Private Schools: 23

Quick Facts (2026-27)

  • # Private Schools: 23

Top Ranked Private Schools Belonging to International Baccalaureate World School (IB) in California (2026-27)

St. Mary's School Photo
St. Mary's School
Gr: NS-8 | 702 students
Avg. class size: 18 students
Sports: 10 | Extracurriculars: 35
Episcopal
7 Pursuit
Aliso Viejo, CA 92656
(949) 448-9027
(2)
View Profile
Map of Al Argam Islamic School & College Preparatory
Al Argam Islamic School & College Preparatory
Gr: PK-12 | 485 students
Avg. class size: 15 students
Sports: 3 | Extracurriculars: 7
Islamic
6990 65th St
Sacramento, CA 95823
(916) 391-3333
View Profile
Convent & Stuart Hall Photo
Convent & Stuart Hall
Gr: K-12
Sports: 16
Catholic
2222 Broadway St
San Francisco, CA 94115
(415) 563-2900
(2)
View Profile
Escuela Bilingรผe Internacional Photo
Escuela Bilingรผe Internacional
Gr: PK-8 | 301 students
Avg. class size: 20 students
Sports: 6 | Extracurriculars: 13
Specialized Curriculum
4550 San Pablo Ave
Emeryville, CA 94609
(510) 653-3324
(1)
View Profile
Map of International School of Los Angeles - Burbank
International School of Los Angeles - Burbank
Gr: 6-12 | 398 students
Sports: 10 | Extracurriculars: 5
Specialized Curriculum
1105 W Riverside Drive
Burbank, CA 91506
(818) 900-1895
View Profile
Map of International School Of Los Angeles - Los Feliz
International School Of Los Angeles - Los Feliz
Gr: NS-5 | 424 students
Avg. class size: 16 students
Sports: 14 | Extracurriculars: 14
Specialized Curriculum
4155 Russell Ave
Los Angeles, CA 90027
(323) 665-4526
(4)
View Profile
International School Of Los Angeles - West Valley Photo
International School Of Los Angeles - West Valley
Gr: NS-5 | 120 students
Avg. class size: 10 students
Sports: 12 | Extracurriculars: 10
Specialized Curriculum
5933 Lindley Ave
Tarzana, CA 91356
(818) 345-0155
(4)
View Profile
The International School of San Francisco Photo
The International School of San Francisco
Gr: PK-12 | 1,060 students
Avg. class size: 13 students
Sports: 12 | Extracurriculars: 8
150 Oak Street
San Francisco, CA 94102
(415) 558-2000
(1)
View Profile
La Scuola International School Photo
La Scuola International School
Gr: NS-8 | 282 students
Avg. class size: 18 students
Sports: 5 | Extracurriculars: 21
3250 18th St
San Francisco, CA 94110
(415) 551-0000
(19)
View Profile
Monte Vista Christian School Photo
Monte Vista Christian School
Gr: 4-12 | 824 students
Avg. class size: 18 students
Sports: 18 | Extracurriculars: 18
Christian
2 School Way
Watsonville, CA 95076
(831) 722-8178
View Profile
New Covenant Academy Photo
New Covenant Academy
Gr: K-12 | 145 students
Avg. class size: 12 students
Sports: 3 | Extracurriculars: 24
Christian
3119 W. 6th Street
Los Angeles, CA 90020
(213) 487-5437
(27)
View Profile
The Quarry Lane School Photo
The Quarry Lane School
Gr: PK-12 | 1,092 students
Avg. class size: 16 students
Sports: 10 | Extracurriculars: 16
6363 Tassajara Rd.
Dublin, CA 94568
(925) 846-9400
(1)
View Profile
Silicon Valley International School Photo
Silicon Valley International School
Gr: PK-12 | 843 students
Avg. class size: 7 students
Sports: 10
Specialized Curriculum
151 Laura Ln
Palo Alto, CA 94303
(650) 251-8500
(2)
View Profile
Terra Schools Photo
Terra Schools
Gr: PK-3 | 91 students
Avg. class size: 13 students
Alternative School
3801 Balboa St.
San Francisco, CA 94121
(415) 906-2220
(5)
View Profile
Villanova Preparatory School Photo
Villanova Preparatory School
Gr: 6-12 | 188 students
Avg. class size: 13 students
Sports: 12 | Extracurriculars: 15
Catholic
12096 N Ventura Avenue
Ojai, CA 93023
(805) 646-1464
View Profile
Alto International School Photo
Alto International School
Gr: PK-12 | 243 students
Avg. class size: 18 students
Sports: 5 | Extracurriculars: 18
475 Pope Street
Menlo Park, CA 94025
(650) 324-8617
(1)
View Profile
California International School Photo
California International School
Gr: PK-6 | 144 students
Avg. class size: 14 students
2213 Sunset Blvd
Rocklin, CA 95765
(916) 521-6414
View Profile
Map of Fairmont Private School
Fairmont Private School
Gr: PK-K | 188 students
Daycare / Preschool
435 W Fairmont Ave
Fresno, CA 93705
(559) 259-8585
View Profile
Granada Preparatory School Photo
Granada Preparatory School
Gr: NS-8 | 120 students
Avg. class size: 12 students
Sports: 3
10400 Zelzah Avenue
Northridge, CA 91326
(818) 368-7254
(9)
View Profile
The Healdsburg School Photo
The Healdsburg School
Gr: K-8 | 206 students
Avg. class size: 20 students
Sports: 3
33 H Healdsburg Avenue
Healdsburg, CA 95448
(707) 433-4846
View Profile

Frequently Asked Questions

What are the top ranked private schools belonging to International Baccalaureate World School (IB) in California?
The top ranked private schools belonging to International Baccalaureate World School (IB) in California include Al Argam Islamic School & College Preparatory, St. Mary's School, and The Quarry Lane School.
How many private schools belonging to International Baccalaureate World School (IB) are located in California?
23 private schools belonging to International Baccalaureate World School (IB) are located in California.
How much do private schools belonging to International Baccalaureate World School (IB) cost in California?
The average tuition cost is $29,565, which is higher than the California private school average tuition cost of $18,350.
How diverse are private schools belonging to International Baccalaureate World School (IB) in California?
California private schools belonging to International Baccalaureate World School (IB) are approximately 53% minority students, which is higher than the California private school average of 52%.
What percentage of private schools belonging to International Baccalaureate World School (IB) are religiously affiliated in California?
26% of private schools belonging to International Baccalaureate World School (IB) in California are religiously affiliated (most commonly Catholic and Christian).
23
Private Schools
8,199
Students
$29,565
Avg. Tuition
53%
Students of Color
9:1
Student-Teacher Ratio

Recent Articles

How Much Homework Is Too Much?
How Much Homework Is Too Much?
Learn how to compare private school homework expectations, recognize excessive workloads, evaluate assignment quality, and ask better questions about academic balance before choosing a school for your child.
Learning Support Without a Formal Program
Learning Support Without a Formal Program
Learn what private schools mean by informal learning support, how services differ from formal programs, and which questions families should ask before choosing the right school today.
Beyond AP vs. IB: How to Judge Academic Rigor
Beyond AP vs. IB: How to Judge Academic Rigor
Learn how to judge academic rigor at private schools without AP or IB by examining curriculum depth, assessments, faculty expectations, advanced coursework, student work, and college preparation outcomes.

Quick Links

SCHOOL SEARCH TOOLS:
SCHOOL BY TYPE (CA):
OPEN-HOUSES & JOBS:
PUBLIC & BOARDING SCHOOLS:
PRIVATE SCHOOL DATA:

Most Popular Articles

Athletics Are Not Optional
Athletics Are Not Optional
 California Private Schools By Tuition Cost
California Private Schools By Tuition Cost
Changing Schools and Moving to New Area
Changing Schools and Moving to New Area

More Articles

Leadership in Private Education
The Journey to Enrollment
Programs for Exceptional Learners
Funding the Future
Premier School Models