SHIRLEY CLARKE (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 and Thinking Classrooms with Katherine Muncaster 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. John Hattie, PhD, is an award-winning education researcher and best-selling author with nearly thirty years of experience examining what works best in student learning and achievement. His research, better known as Visible Learning, is a culmination of nearly thirty years synthesizing more than 2,100 meta-analyses comprising more than one hundred thousand studies involving over 300 million students around the world. He has presented and keynoted in over three hundred international conferences and has received numerous recognitions for his contributions to education. His notable publications include Visible Learning, Visible Learning for Teachers, Visible Learning and the Science of How We Learn; Visible Learning for Mathematics, Grades K-12; and 10 Mindframes for Visible Learning.