Christopher Day is Professor of Education and Co-Director of the Centre for Teacher and School Development at the University of Nottingham. He has extensive teaching and lecturing experience both in the UK and internationally and has published widely on leadership and professional development. Alma Harris is Senior Lecturer in Education and Co-Director of the Centre for Teacher and School Development at the University of Nottingham. She is also a Research Associate of the International Centre for School Effectiveness and School Improvement at the Institute of Education, University of London. Harry Tolley was formerly Senior Lecturer in Education at the University of Nottingham and currently works as a consultant in training and human resource development. He has an ongoing interest in the professional development of teachers. Mark Hadfield is a Lecturer in Education and a Co-ordinating Director of the Centre for Teacher and School Development at the University of Nottingham. He is an experienced teacher, researcher and consultant. John Beresford worked in primary schools for over twenty years before becoming Research Officer for the Improving the Quality of Education for All School Improvement project based at the Universities of Cambridge and Nottingham. He is governor of a primary school and an OFSTED inspector.