• Saint George has been a member of the prestigious International Baccalaureate Organization (IB) since 1995. It is, to date, the only school in the Caribbean authorized to teach the IB course of study.
• The use of both languages, the multicultural environment at Saint George coupled with the IB studies programme promote critical, creative and reflective graduates. 
• The  IB Diploma may be validated at universities throughout the world.

The IB programme is a demanding two-year pre-college course for highly motivated Senior School students between the ages of 16 and 19. It allows its graduates to comply with the requirements of several national education systems.
This programme of study is not based on any specific country although it integrates the best elements of many of them. The IB courses offered at St. George are:

These IB courses are an integral part of our curriculum and are mandatory for all 11th and 12th grade students, although exams are optional. Due to the extensive material that needs to be covered for the IB Programme, some of the contents are integrated into the 9th and 10th grade courses. Grades corresponding to these courses are therefore reflected under each subject area in the transcript.

Apart from these traditional liberal arts programme components, the IB requires students to complete the Theory of Knowledge (TDC) course and the Creativity, Action, Service (CAS). The TDC, taught in English, is an interdisciplinary course which stimulates students to critical reflection about knowledge acquired both inside and outside the classroom; it invites them to question the fundamentals of knowledge. CAS involves students in community service, theatre, and sports activities thus contributing to the integral and humanitarian formation of students.
The student evaluation of the International Baccalaureate is carried out according to the work which he/she does in school and, most importantly, the external exams received from the international offices of the IB Organization. In addition the student must produce an extended essay dissertation on Theory of Knowledge, and two more in Literature.  They must also present two written tasks for English, a Math portfolio, a Biology group project, and take oral exams in English, French and Spanish.