Welcome to Dylan Wiliam’s website


Inside the Black Box, and other booklets containing ideas about how to improve formative assessment in schools, are available from GL Assessment in Europe, and Hawker-Brownlow in Australasia.

You can email me at dylanwiliam@mac.com and follow me on Twitter @dylanwiliam.

As far as I am aware, the copyright to the contents of this site is held by me and my various co-authors, and the materials here may be freely used and disseminated provided the source is acknowledged. Formally, this is an Attribution-No Derivative Works 3.0 United States license as specified by the Creative Commons.


Professional 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, and in Australasia through Hawker-Brownlow. For the Americas, please email Siobhán Leahy. For further details of the pack, click 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. Details are here.

My latest book, Embedded formative assessment can be ordered from Amazon.com and Amazon.co.uk.