IB DP: Extended Essay and TOK

The Diploma Programme Core

Beyond six subject groups, all IB DP students complete the Core: Extended Essay (EE), Theory of Knowledge (TOK), and Creativity, Activity, Service (CAS). Together these develop research, critical thinking and personal growth.

The Extended Essay

• 4,000-word independent research essay in a chosen subject

• Graded A–E; contributes up to 3 bonus points combined with TOK

• Requires a supervisor, reflection sessions (RPPF), and a viva voce

Theory of Knowledge

TOK is a philosophy-of-knowledge course. Students explore how we know what we know across different Areas of Knowledge (Natural Sciences, Mathematics, History, Ethics, etc.) and Ways of Knowing (reason, intuition, emotion, language).

Top Tips for the EE

• Choose a specific, focused research question – not too broad

• Use primary and secondary sources

• Start early: the EE takes 40 hours of independent work