Villanova Preparatory School Photo - GIRLS IN STEM! Villanova is the only high school in the nation that is a member of the Clare Boothe Luce Program. Clare Booth Luce, playwright, novelist, first U.S. Congresswoman from Connecticut, and ambassador to Italy, "sought to encourage women to enter, study, graduate, and teach" in the fields of science, engineering, and mathematics.

Top 5 Best California Private High Schools Belonging to International Baccalaureate (IB) World School (2025)

For the 2025 school year, there are 9 private high schools belonging to International Baccalaureate (IB) World School serving 4,303 students in California. You can also find more schools membership associations in California.
The top ranked private high schools belonging to International Baccalaureate (IB) World School in California include New Covenant Academy, The Quarry Lane School, and Villanova Preparatory School.
The average acceptance rate is 59%, which is lower than the California private high school average acceptance rate of 80%.
44% of private high schools belonging to International Baccalaureate (IB) World School in California are religiously affiliated (most commonly Catholic and Christian).

Top Ranked Private High Schools Belonging to International Baccalaureate (IB) World School in California (2025)

School
Location
Grades
Students
6990 65th St
Sacramento, CA 95823
(916) 391-3333
Grades: PK-12
| 485 students
Convent & Stuart Hall
Convent & Stuart Hall Photo
(Catholic)
2222 Broadway St
San Francisco, CA 94115
(415) 563-2900
Grades: K-12
| n/a students
International School of Los Angeles - Burbank
Special Program Emphasis
1105 W Riverside Drive
Burbank, CA 91506
(818) 900-1895
Grades: 6-12
| 398 students
150 Oak Street
San Francisco, CA 94102
(415) 558-2000
Grades: PK-12
| 1,067 students
New Covenant Academy
New Covenant Academy Photo
(Christian)
(26)
3119 W. 6th Street
Los Angeles, CA 90020
(213) 487-5437
Grades: K-12
| 145 students
The Quarry Lane School
The Quarry Lane School Photo
(1)
6363 Tassajara Rd.
Dublin, CA 94568
(925) 846-9400
Grades: PK-12
| 1,092 students
Silicon Valley International School
Special Program Emphasis
(2)
151 Laura Ln
Palo Alto, CA 94303
(650) 251-8500
Grades: PK-12
| 781 students
Villanova Preparatory School
Villanova Preparatory School Photo - Founded in 1924, Villanova Prep is the only Catholic boarding school in the Augustinian tradition. Our 130-acre campus located in Ojai, California, approximately 60 minutes north of Los Angeles, has several athletic and academic facilities to support our students' development of mind, body, and spirit.
(Catholic)
12096 N Ventura Avenue
Ojai, CA 93023
(805) 646-1464
Grades: 6-12
| 188 students
Alto International School
Alto International School Photo
(1)
475 Pope Street
Menlo Park, CA 94025
(650) 324-8617
Grades: PK-12
| 243 students

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