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.
International Baccalaureate Organization (IBO) Member Schools (2026-27)
Gr: 9-12 | PK-12 (day) | 900 students
Student-teacher ratio: 6.5:1
Avg. class size: 11 students
Tuition listed
827 N Tacoma Ave
Tacoma, WA 98403
(253) 284-8603
Gr: 9-12 | 3-12 (day) | 750 students
Student-teacher ratio: 8:1
Avg. class size: 17 students
Acceptance rate: 65%
Tuition listed
362 Mariposa Avenue
Ottawa, Canada K1M 0T3
(613) 749-9630
Gr: 7-12 | 270 students
Student-teacher ratio: 8:1
Avg. class size: 15 students
Tuition listed
80 chemin Moulton Hill
Sherbrooke, Quebec, Canada J1M 1Z8
(819) 566-0238
Gr: 7-12 | PK-12 (day) | 910 students
Student-teacher ratio: 8:1
Avg. class size: 16 students
Acceptance rate: 33%
Tuition listed
All-girls
10 Elm Avenue
Toronto, Canada m4w 1n4
(416) 920-9741
Gr: 6-12 | PK-12 (day) | 1,200 students
Student-teacher ratio: 8:1
Avg. class size: 20 students
Acceptance rate: 50%
Tuition listed
234 Global edu-ro, Daejeong-eup, Seogwipo-si
Jeju-do, South Korea 63644
82649025000
Gr: 9-12 | 290 students
Student-teacher ratio: 8:1
Avg. class size: 15 students
Tuition listed
582 Columbus Ave
Thornwood, NY 10594
(914) 495-6056
Gr: 11-12 | 112 students
Student-teacher ratio: 15:1
Avg. class size: 13 students
Tuition listed
Pullens Lane Headington
Oxford, United Kingdom OX30DA
9144956028
Gr: 9-12, PG | 410 students
Student-teacher ratio: 14:1
Avg. class size: 14 students
Acceptance rate: 62%
Tuition listed
975 West Main Street
Dover Foxcroft, ME 04426
(207) 564-8664
Gr: 11-12 | 350 students
Student-teacher ratio: 5:1
Avg. class size: 25 students
Tuition listed
Calle Castellón de la Plana 8
Madrid, Spain 28006
0034915689937
Gr: 6-12 | PK-12 (day) | 620 students
Student-teacher ratio: 6:1
Avg. class size: 10 students
Tuition listed
Chem. de Pangires 26
Saint-Légier-La Chiésaz, Switzerland 1806
412155550
Gr: 8-12, PG | 80 students
Student-teacher ratio: 15:1
Avg. class size: 15 students
Tuition listed
St. Josefsweg 15b
Altdorf, Switzerland 6460
0766909288
Gr: 9-12 | PK-12 (day) | 280 students
Student-teacher ratio: 6:1
Avg. class size: 17 students
Tuition listed
Mühlentalstrasse 280
Schaffhausen, Switzerland 8200
41526241707
Gr: 9-12 | PK-12 (day) | 700 students
Student-teacher ratio: 6:1
Avg. class size: 18 students
Tuition listed
1 Morris Street
New York, NY 10004
(212) 232-0266
Gr: 9-12 | 420 students
Student-teacher ratio: 17:1
Avg. class size: 23 students
Acceptance rate: 64%
Tuition listed
1500 Royal Street
Regina, Canada S4T 5A5
(306) 205-3738
Gr: 5-12, PG | K-12, PG (day)
Avg. class size: 22 students
Acceptance rate: 40%
Tuition listed
Edu City Ro
Jeju, South Korea 63644
82647938004
Gr: 8-12 | PK-12 (day) | 320 students
Student-teacher ratio: 7:1
Avg. class size: 18 students
Acceptance rate: 80%
Tuition listed
5521 East Warm Springs Avenue
Boise, ID 83716
(208) 424-5000
Gr: 9-12, PG | 175 students
Student-teacher ratio: 8:1
Avg. class size: 10 students
Acceptance rate: 60%
Tuition listed
All-girls (Episcopal)
8400 Greenspring Avenue
Stevenson, MD 21153
(410) 486-7401
Gr: 8-12 | PK-12 (day) | 253 students
Student-teacher ratio: 8:1
Avg. class size: 12 students
Tuition listed
Coldharbour Lane
Thorpe, Surrey TW20 8TE, United Kingdom TW20 8TE
441932565252
Gr: 7-12 | K-12 (day) | 165 students
Student-teacher ratio: 14:1
Avg. class size: 14 students
Acceptance rate: 80%
Tuition listed
7808 Pierre Dr
Summerland, Canada V0H 1Z2
(250) 404-3232
Gr: 6-12 | PK-12 (day) | 1,400 students
Student-teacher ratio: 9:1
Avg. class size: 18 students
Acceptance rate: 50%
Tuition listed
13051 Whittington Drive
Houston, TX 77077
(281) 496-7900
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