My gratitude to the Institute of Education, University of London, for its help in three periods of study between 2000 and 2011: to Director Emeritus Professor Geoff Whitty and current Director Professor Chris Husbands; to Professors Stephen Ball, David Gillborn, David Hopkins, Ron Glatter, and Carol Vincent; and to Doctors Sara Bubb and Marie Lull. My deepest thanks to the London Centre for Leadership in Learning (LCLL), under Doctor Hilary Emery, Professor Alma Harris, and, currently, Ms Vivienne Porritt, for its kind help and support. Many thanks to Professors Louise Stoll and Kathryn Riley and Dr Karen Edge for their sound advice. Thanks to Mr Max Coates, Ms Elizabeth Wood, and Doctor Rob Higham. Many thanks to the LCLL administrative staff for their assistance. Thanks to the British Foreign Office for its help in funding the 2000–01 fellowship at the Institute of Education, under the auspices of the Chevening Award Scholarships, and to the British Council for its administrative support. Thanks to my alma mater, Tel-Aviv University, for its continuous support of my research. Thanks to the Jaime and Joan Constantiner School of Education, where I am a tenured member of the senior staff, and the Buchmann Faculty of Law where I am adjunct lecturer.