Mike Bottery is Emeritus Professor of Education at the University of Hull, UK. He has published eight books on issues of educational leadership, values and sustainability, including The Challenges of Educational Leadership (2004) and Educational Leadership for a More Sustainable World (2016).Wong Ping-Man is Adjunct Professor of Education Administration at the University of Macau, China. He was director of leadership courses at the Hong Kong Institute of Education, China, and is currently Adjunct Professor of the Education University of Hong Kong, China. He has a long list of notable journal articles.George Ngai is Assistant Professor in educational leadership in the Education University of Hong Kong, China. He is a qualified headteacher, a school manager and has written a variety of articles in this area.