Welcome to Dylan Wiliam’s websiteProfessional development Finally! The revised Embedding formative assessment pack for schools and colleges to run their own two-year professional development programme on formative assessment is now available worldwide. In Europe, this can be ordered through SSAT, in Australasia through Hawker-Brownlow, and in North America from Learning Sciences International. Further details of the pack are here. Also, a series of high-quality video presentations by Dylan Wiliam, with a total running time of over two and a half hours, is now available world-wide.