This resources has been designed to make marking and feedback for IBDP Theory of Knowledge quick, easy and effective. The document consists of a range of marking codes with explanations that can be used with any ToK written work including the ToK essay, ToK journals or writing that evaluates knowledge questions. Simply copy and paste the codes onto the work. The comments can be used formatively to better engage students in reflecting on their understanding of ToK. This resources is excellent for teachers who are new to ToK and require some ideas about what to look for in student writing and reflections, as well as experienced teachers looking to speed up, or simplify their marking. The comments have been written with the ToK Assessment Instrument in mind and employ ‘ToK’ language and concepts throughout, as well as providing general advice about analytical essay writing.