Sue Swaffield is Senior Lecturer at the Faculty of Education, University of Cambridge, UK. She is also a Fellow of Wolfson College Cambridge, UK, and Adjunct Research Fellow at Griffith University, Australia. She teaches and researches in the fields of educational leadership, school improvement and assessment for learning. Her career-long involvement with assessment has included research and development projects large and small, a wide range of publications, leading a national assessment association, and numerous presentations, courses and workshops around the world.

Sally M. Thomas is Professor of Education at the Graduate School of Education, University of Bristol, UK. For 25 years, she has published widely on the topics of educational quality, effectiveness and improvement using both qualitative and quantitative research methods. Her research interests are focused on professional and school learning communities, pupil learning, citizenship and education in developing countries including East Asia, Africa and South America.