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 Trial