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TOK and CAS form part of The CORE of the IB Diploma programme.

Important: TOK, CAS and the extended essay are the three elements that differentiate the IB Diploma Programme from other final high school qualifications.

To obtain the IB Diploma and reap the full benefits of the programme, one must complete each of these subjects. 

The CORE impacts:

  • the way in which the student regards  and questions his own social awareness,
  • his cultural understanding,
  • influences his university choices and
  • positively impacts his career.  

TOK- Theory of Knowledge


It would be wrong to consider TOK as a purely academic subject.In fact, it endeavours to teach you nothing ... other than to question everything.

  • It poses such interesting questions as "How do you know that ..."
  • It examines what can really be construed as evidence?

Simply put, it is really a voyage of discovery in which the student questions every single thing that he has previously believed to be true.    


CAS- Creativity, Activity and Service

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CAS takes place outside of the classroom and is conducted in the student's private time, usually over the first 18 months of the diploma.

  • CAS gives the student the ability to broaden his horizons.
  • The student continues to be a learner outside the classroom.
  • He becomes a learner “in the wild”.
  • The student must be the prime instigator of this part of his education.

Examples of CAS projects and what it may consist of:

Creativity: arts, and other experience that involves creative thinking.

Activity: a sometimes physical exertion contributing to a healthy lifestyle, complementing academic work elsewhere in the Diploma Program.

Service: an unpaid and voluntary exchange that has a learning benefit for the student. The rights, dignity and autonomy of all those involved are respected. Service projects may be in the local, national and international contexts.

Want to find out more ? Click here for the full IB Diploma brochure. 

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