Theory of Knowledge (TOK) is a core part of the IB’s Diploma Programme and is taught over the course of two years. The programme encourages students to think critically about the nature of knowledge itself and explore ways of knowing. Students examine and challenge their own inbuilt framework of knowledge and beliefs in order to develop self-awareness, recognise biases and widen their perspectives. The TOK programme achieves this through two key assessments: the TOK Exhibition and the TOK Essay.