Headwaters School Photo - Headwaters Students are Peacemakers, Advocates, Creators, and Thinkers ranging from 18 months to high school seniors.

Best Texas Private High Schools Belonging to International Baccalaureate (IB) World School (2025-26)

For the 2025-26 school year, there are 9 private high schools belonging to International Baccalaureate (IB) World School serving 5,423 students in Texas. You can also find more schools membership associations in Texas.
The top ranked private high schools belonging to International Baccalaureate (IB) World School in Texas include The British International School Of Houston, LIH- Lycée International de Houston, and The Post Oak School.
The average acceptance rate is 58%, which is lower than the Texas private high school average acceptance rate of 82%.

Top Ranked Private High Schools Belonging to International Baccalaureate (IB) World School in Texas (2025-26)

School
Location
Quick Facts
The British International School Of Houston
The British International School Of Houston Photo
Alternative School
(1)
2203 N. Westgreen Blvd
Katy, TX 77449
(713) 290-9025
Gr: PK-12 | 1,200 student Avg. class size: 18 students Sports: 18 | Extracurrculars: 9 Tuition & acceptance rate listed
Cunae International School
Cunae International School Photo
Special Program Emphasis
(10)
5655 Creekside Forest Dr
Spring, TX 77389
(281) 516-3770
Gr: PK-12 | 120 students Avg. class size: 14 students Tuition listed
LIH- Lycée International de Houston
LIH- Lycée International de Houston Photo
Special Program Emphasis
(843)
15950 Park Row
Houston, TX 77084
(832) 474-1013
Gr: NS-12 | 588 students Avg. class size: 18 students Sports: 14 | Extracurrculars: 6 Tuition & acceptance rate listed
15506 TX-71, Bee Cave, TX 78738
Austin, TX 78738
(512) 351-3403
Gr: NS-12 | 204 students Avg. class size: 16 students Sports: 5 | Extracurrculars: 18 Tuition listed
6039 Churchill Way
Dallas, TX 75230
(972) 991-6379
Gr: NS-12 | 654 students Avg. class size: 15 students Sports: 10 | Extracurrculars: 4 Tuition listed
Headwaters School
Headwaters School Photo - Headwaters Students are Peacemakers, Advocates, Creators, and Thinkers ranging from 18 months to high school seniors.
Montessori School
(3)
807 Rio Grande
Austin, TX 78701
(512) 480-8142
Gr: PK-12 | 525 students Avg. class size: 20 students Sports: 5 | Extracurrculars: 10 Tuition listed
The Post Oak School
The Post Oak School Photo - Middle School (D.C. trip)
Montessori School
(2)
4600 Bissonnet St
Bellaire, TX 77401
(713) 661-6688
Gr: NS-12 | 484 students Avg. class size: 28 students Sports: 7 | Extracurrculars: 16 Tuition & acceptance rate listed
The Village School
The Village School Photo
Special Program Emphasis
(1)
13051 Whittington Drive
Houston, TX 77077
(281) 496-7900
Gr: PK-12 | 1,343 student Avg. class size: 18 students Sports: 16 | Extracurrculars: 26 Tuition listed
The Westwood School
The Westwood School Photo - Westwood Preschool students enjoying our playground together
Montessori School
14295 Midway Rd.
Addison, TX 75001
(972) 239-8598
Gr: PK-12 | 293 students Sports: 7 Tuition listed

Recent Articles

When to Apply to Private School, Admissions Deadlines for January and Fall
When to Apply to Private School, Admissions Deadlines for January and Fall
Learn when to apply to private school with clear guidance on admissions timelines, deadlines, and January and fall intake options.
Sliding-Scale & Income-Based Tuition Models for Private Schools
Sliding-Scale & Income-Based Tuition Models for Private Schools
Learn how sliding-scale and income-based tuition models work and whether they are right for your family. Compare costs, eligibility, and school options.
2025 Private School Costs in the U.S.: What Families Should Expect
2025 Private School Costs in the U.S.: What Families Should Expect
Updated 2025 U.S. private school tuition averages, cost breakdowns, and expert insights to help parents and students budget wisely.