IB Core Explained: EE, TOK and CAS Together
What is the IB core?
The IB core is the shared requirement for all Diploma students: Extended Essay (EE), Theory of Knowledge (TOK) and Creativity, Activity, Service (CAS). Together they develop research, critical thinking and engagement beyond the classroom.
The three components
| Component | Purpose | Assessment |
|---|---|---|
| EE | Independent research | 4,000-word essay; contributes to points |
| TOK | Critical reflection on knowledge | Exhibition + essay; contributes to points |
| CAS | Experiences beyond academics | Portfolio; satisfactory completion |
Points from the core
EE and TOK combine to contribute up to 3 points via a matrix:
| TOK grade | EE grade | Points |
|---|---|---|
| A | A | 3 |
| A | B | 3 |
| B | A | 3 |
| B | B | 2 |
| … | … | … |
| E | E | 0 (diploma not awarded) |
CAS does not contribute points but must be completed satisfactorily.
Diploma conditions
To receive the diploma, students must:
- Pass all six subjects (and meet grade conditions)
- Complete EE and TOK (no grade E in either)
- Complete CAS satisfactorily
Time and workload
- EE: Spread over 11+ months; significant independent work
- TOK: ~100 hours of teaching; exhibition and essay
- CAS: 150+ hours across two years; reflection and project
How Tutopiya helps
Tutopiya supports the IB core with subject tutors and guidance on EE, TOK and CAS. Explore IB resources or book a free trial.
Source: IB DP core
Ready to Excel in Your Studies?
Get personalised help from Tutopiya's expert tutors. Whether it's IGCSE, IB, A-Levels, or any other curriculum — we match you with the perfect tutor and your first session is free.
Book Your Free TrialWritten by
Tutopiya Team
Related Articles
How IB Students in Belgium Can Use Topic-by-Topic Resources to Build a Less Chaotic Revision Workflow
A practical guide for IB students in Belgium using topic-by-topic resources to build a more organised revision workflow across demanding subjects.
How IB Students in Finland Can Use Resources to Build a Better Topic-by-Topic Workflow Across Subjects
A practical guide for IB students in Finland using academic resources more effectively by building a clearer topic-by-topic workflow across several subjects.
How IB Students in Ireland Can Use Resources to Stop Revising Everything as if It Is Equally Urgent
A practical guide for IB students in Ireland using academic resources more effectively by separating real priorities from broad subject pressure.