Shirley Clark (M.Ed., Hon. Doc) is a world expert in formative assessment, specializing in the practical application of its principles. Many thousands of teachers have worked with Shirley or read her books and, through them, the practice of formative assessment is continually evolving, developing and helping to transform students’ achievements. Shirley’s latest publications are Visible Learning Feedback with John Hattie, Thinking Classrooms with Katherine Muncaster, and The On-Your-Feet Guide to Partner Talk. Her website www.shirleyclarke-education.org contains a videostreaming platform of clips of formative assessment in action as well as detailed feedback from her action research teams.