TOK is a core Ib subject that is integral for attaining the diploma. Within the the program, full diploma candidates must not only complete the course, they must also complete an external and an internal assessment. The internal assessment requires the student to present a question that explores a particular KI (knowledge Issue) through the propagation and analysis of a KQ (Knowledge Question). The external assessment explores a similar style as the presentation however, the student's response must be in a essay format.