Welcome to TOK! Theory of Knowledge is a required course for full IB Diploma candidates.It challenges students to reflect critically on diverse ways of knowing and areas of knowledge, and to consider the role which knowledge plays in a global society. It encourages students to become aware of themselves as thinkers and to develop a fascination for the complexity of knowledge. The TOK program is composed almost entirely of questions. This unique course incorporates philosophy and epistemology, in addition to elements that make it completely its own entity.