International Baccalaureate Organization (IBO) Member Schools

BoardingSchoolReview.com lists 20 boarding schools as International Baccalaureate Organization (IBO) members, serving 9,605 students. Learn more about the association at International Baccalaureate Organization (IBO).

Membership data comes from the schools themselves and from published association directories. See all school associations.

The International School of Schaffhausen Photo - The International School of Schaffhausen is located in the north of Switzerland, in the idyllic town of Schaffhausen. ISSH offers both the IB Diploma Programme and a High School Diploma Programme, with a focus on STEM subjects.

St. Timothy's School Photo - The Commons is equal parts living room and dining room. The newest building on campus, the Commons is a gathering space that houses the dining hall and the new Redlands Cafe.

UNISUS School Photo - UNISUS is a co-ed Canadian day and boarding school in British Columbia's Okanagan Valley, where local and international students learn together. Our IB programmes and Academics+ combine strong academics with Scholar-Athlete Academies and Enrichment programs built into the school day. Students discover their interests, develop skills and explore pathways beyond graduation.

EF Academy Oxford Photo - Model United Nations is particularly relevant and competitive at our school with a student body from over 60 nationalities.

Branksome Hall Photo - Branksome Hall

The Village School Photo - The Village School is located in the Energy Corridor of Houston, Texas, and hosts a vibrant international population which enriches the school community with a global perspective.

NLCS Jeju Photo - NLCS Jeju campus

International School Altdorf Photo

Annie Wright Schools Photo - Annie Wright Schools, located in Tacoma, WA serves students pre-kindergarten through 12th grade. Our upper schools program provides boarding for 9-12th students and a co-educational model of classroom learning

Riverstone International School Photo - Riverstone House, steps away from downtown Boise, is the home-away-from-home for our boarding community. With only 30 students maximum, our students and staff become family.

TASIS England Photo - TASIS England's beautiful 46-acre campus near London and Heathrow airport is well positioned for access to travel and the cultural riches of this vibrant capital.

Léman Manhattan Preparatory School Photo

Bishop's College School Photo - Our mission is simple: to create a caring community of learning and development where cultures connect and individuals matter. Our commitment to excellence in academics, wellness, athletics, creativity, and service contribute to a lifetime of engagement and global competence

Branksome Hall Asia Photo - After school activities are provided through our co-curricular (C.A.S.E.) and academy programs. We offer Badminton, Volleyball, Tennis, Basketball, Soccer, Golf, Swimming, Cross Country, Track and Field, and Equestrian.

Ashbury College Photo - All of Ashbury's boarding facilities feature ensuite bathrooms, a full kitchen in each residence, and many indoor and outdoor common areas, including fitness, music, and game rooms.

Foxcroft Academy Photo - Foxcroft Academy... 1st chartered school in Maine (est. 1823)

Haut-Lac International Bilingual School Photo - Graduation day with Geneva Lake, Switzerland

The Global College Photo - Green outdoor area for students

Luther College High School Photo - Luther offers the Saskatchewan government regulated curriculum, the university recognized International Baccalaureate program and diverse liberal arts programming. All of Luther College`s courses are in the academic stream, leading to a strong preparation for university studies.

EF Academy New York Photo - Our campus is located an hour outside of New York City in the peaceful suburban community of Thornwood, New York.

St. Timothy's School Photo - The Commons is equal parts living room and dining room. The newest building on campus, the Commons is a gathering space that houses the dining hall and the new Redlands Cafe.

UNISUS School Photo - UNISUS is a co-ed Canadian day and boarding school in British Columbia's Okanagan Valley, where local and international students learn together. Our IB programmes and Academics+ combine strong academics with Scholar-Athlete Academies and Enrichment programs built into the school day. Students discover their interests, develop skills and explore pathways beyond graduation.

EF Academy Oxford Photo - Model United Nations is particularly relevant and competitive at our school with a student body from over 60 nationalities.

The Village School Photo - The Village School is located in the Energy Corridor of Houston, Texas, and hosts a vibrant international population which enriches the school community with a global perspective.

Annie Wright Schools Photo - Annie Wright Schools, located in Tacoma, WA serves students pre-kindergarten through 12th grade. Our upper schools program provides boarding for 9-12th students and a co-educational model of classroom learning

Riverstone International School Photo - Riverstone House, steps away from downtown Boise, is the home-away-from-home for our boarding community. With only 30 students maximum, our students and staff become family.

TASIS England Photo - TASIS England's beautiful 46-acre campus near London and Heathrow airport is well positioned for access to travel and the cultural riches of this vibrant capital.

Léman Manhattan Preparatory School Photo

Bishop's College School Photo - Our mission is simple: to create a caring community of learning and development where cultures connect and individuals matter. Our commitment to excellence in academics, wellness, athletics, creativity, and service contribute to a lifetime of engagement and global competence

Branksome Hall Asia Photo - After school activities are provided through our co-curricular (C.A.S.E.) and academy programs. We offer Badminton, Volleyball, Tennis, Basketball, Soccer, Golf, Swimming, Cross Country, Track and Field, and Equestrian.

Ashbury College Photo - All of Ashbury's boarding facilities feature ensuite bathrooms, a full kitchen in each residence, and many indoor and outdoor common areas, including fitness, music, and game rooms.

Foxcroft Academy Photo - Foxcroft Academy... 1st chartered school in Maine (est. 1823)

Haut-Lac International Bilingual School Photo - Graduation day with Geneva Lake, Switzerland

The Global College Photo - Green outdoor area for students

Luther College High School Photo - Luther offers the Saskatchewan government regulated curriculum, the university recognized International Baccalaureate program and diverse liberal arts programming. All of Luther College`s courses are in the academic stream, leading to a strong preparation for university studies.

EF Academy New York Photo - Our campus is located an hour outside of New York City in the peaceful suburban community of Thornwood, New York.

International Baccalaureate Organization (IBO) Member Schools (2026-27)

School

Location

Quick Facts

Annie Wright Schools

Add to Compare

827 N Tacoma Ave
Tacoma, WA 98403
(253) 284-8603

Gr: 9-12 | PK-12 (day) | 900 students Student-teacher ratio: 6.5:1 Avg. class size: 11 students Tuition listed

Ashbury College

Add to Compare

(14)

362 Mariposa Avenue
Ottawa, Canada K1M 0T3
(613) 749-9630

Gr: 9-12 | 3-12 (day) | 750 students Student-teacher ratio: 8:1 Avg. class size: 17 students Acceptance rate: 65% Tuition listed

Bishop's College School

Add to Compare

80 chemin Moulton Hill
Sherbrooke, Quebec, Canada J1M 1Z8
(819) 566-0238

Gr: 7-12 | 270 students Student-teacher ratio: 8:1 Avg. class size: 15 students Tuition listed

Branksome Hall

Add to Compare

(19)

10 Elm Avenue
Toronto, Canada m4w 1n4
(416) 920-9741

Gr: 7-12 | PK-12 (day) | 910 students Student-teacher ratio: 8:1 Avg. class size: 16 students Acceptance rate: 33% Tuition listed

Branksome Hall Asia

Add to Compare

234 Global edu-ro, Daejeong-eup, Seogwipo-si
Jeju-do, South Korea 63644
82649025000

Gr: 6-12 | PK-12 (day) | 1,200 students Student-teacher ratio: 8:1 Avg. class size: 20 students Acceptance rate: 50% Tuition listed

EF Academy New York

Add to Compare

(2)

582 Columbus Ave
Thornwood, NY 10594
(914) 495-6056

Gr: 9-12 | 290 students Student-teacher ratio: 8:1 Avg. class size: 15 students Tuition listed

EF Academy Oxford

Add to Compare

(4)

Pullens Lane Headington
Oxford, United Kingdom OX30DA
9144956028

Gr: 11-12 | 112 students Student-teacher ratio: 15:1 Avg. class size: 13 students Tuition listed

Foxcroft Academy

Add to Compare

(2)

975 West Main Street
Dover Foxcroft, ME 04426
(207) 564-8664

Gr: 9-12, PG | 410 students Student-teacher ratio: 14:1 Avg. class size: 14 students Acceptance rate: 62% Tuition listed

The Global College

Add to Compare

Calle Castellón de la Plana 8
Madrid, Spain 28006
0034915689937

Gr: 11-12 | 350 students Student-teacher ratio: 5:1 Avg. class size: 25 students Tuition listed

Haut-Lac International Bilingual School

Add to Compare

Chem. de Pangires 26
Saint-Légier-La Chiésaz, Switzerland 1806
412155550

Gr: 6-12 | PK-12 (day) | 620 students Student-teacher ratio: 6:1 Avg. class size: 10 students Tuition listed

International School Altdorf

Add to Compare

St. Josefsweg 15b
Altdorf, Switzerland 6460
0766909288

Gr: 8-12, PG | 80 students Student-teacher ratio: 15:1 Avg. class size: 15 students Tuition listed

The International School of Schaffhausen

Add to Compare

Mühlentalstrasse 280
Schaffhausen, Switzerland 8200
41526241707

Gr: 9-12 | PK-12 (day) | 280 students Student-teacher ratio: 6:1 Avg. class size: 17 students Tuition listed

Léman Manhattan Preparatory School

Add to Compare

1 Morris Street
New York, NY 10004
(212) 232-0266

Gr: 9-12 | PK-12 (day) | 700 students Student-teacher ratio: 6:1 Avg. class size: 18 students Tuition listed

Luther College High School

Add to Compare

(4)

1500 Royal Street
Regina, Canada S4T 5A5
(306) 205-3738

Gr: 9-12 | 420 students Student-teacher ratio: 17:1 Avg. class size: 23 students Acceptance rate: 64% Tuition listed

NLCS Jeju

Add to Compare

Edu City Ro
Jeju, South Korea 63644
82647938004

Gr: 5-12, PG | K-12, PG (day) Avg. class size: 22 students Acceptance rate: 40% Tuition listed

Riverstone International School

Add to Compare

5521 East Warm Springs Avenue
Boise, ID 83716
(208) 424-5000

Gr: 8-12 | PK-12 (day) | 320 students Student-teacher ratio: 7:1 Avg. class size: 18 students Acceptance rate: 80% Tuition listed

St. Timothy's School

(Episcopal)

Add to Compare

(2)

8400 Greenspring Avenue
Stevenson, MD 21153
(410) 486-7401

Gr: 9-12, PG | 175 students Student-teacher ratio: 8:1 Avg. class size: 10 students Acceptance rate: 60% Tuition listed

TASIS England

Add to Compare

Coldharbour Lane
Thorpe, Surrey TW20 8TE, United Kingdom TW20 8TE
441932565252

Gr: 8-12 | PK-12 (day) | 253 students Student-teacher ratio: 8:1 Avg. class size: 12 students Tuition listed

UNISUS School

Add to Compare

7808 Pierre Dr
Summerland, Canada V0H 1Z2
(250) 404-3232

Gr: 7-12 | K-12 (day) | 165 students Student-teacher ratio: 14:1 Avg. class size: 14 students Acceptance rate: 80% Tuition listed

The Village School

Add to Compare

13051 Whittington Drive
Houston, TX 77077
(281) 496-7900

Gr: 6-12 | PK-12 (day) | 1,400 students Student-teacher ratio: 9:1 Avg. class size: 18 students Acceptance rate: 50% Tuition listed

Recent Articles

October 07, 2026

The power of community, and the weight of community service, in a small school.

Discover how Besant Hill School’s residential life program builds community, service, independence, and personal growth beyond the classroom.

October 05, 2026

How Much Does Travel Add to Boarding School Costs?

Learn how flights, airport transfers, school breaks, family visits, baggage, and international travel can increase boarding school costs, and how families can build realistic annual travel budgets.

October 05, 2026

Sibling Discounts at Boarding Schools

Explore how sibling discounts at boarding schools work, what families should ask before enrolling multiple children, and why long-term affordability matters more than discounts when choosing schools.