Dr. Arran Hamilton is Group Director of Education at Cognition Education. Previously he has held senior positions at Cambridge University Press & Assessment, Education Development Trust, the British Council, Nord Anglia Education, and a research fellowship at Warwick University. His core focus is on translating evidence into impact at scale, and he has overseen the design, delivery, and evaluation of education programs across the Pacific Islands, East Asia, the Middle East, United Kingdom, Australia, and New Zealand. Arran’s recent publications include The Gold Papers and The Lean Education Manifesto. 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. Dr. Dylan Wiliam is emeritus professor of educational assessment at the UCL Institute of Education. He started his career teaching in urban London schools before transitioning to educational research. He was dean of the School of Education at King’s College London, senior research director at the Educational Testing Service in Princeton, US, and deputy director of the Institute of Education, University of London. His research has focused on the use of assessment to support learning (sometimes called formative assessment), and he now works with groups of teachers all over the world on developing formative assessment practices. Dylan’s recent books include Creating the Schools Our Children Need and Embedded Formative Assessment.