Dr Salleh Hairon is an Associate Professor, Policy and Leadership Studies Academic Group, at the National Institute of Education, Nanyang Technological University, Singapore. His research interests center on school leadership for teacher learning in communities, comprising topics on distributed leadership, teacher leadership, professional learning communities, teachers’ professional development, and action research.Dr Jonathan Wee Pin Goh is an Associate Professor, Policy and Leadership Studies Academic Group, at the National Institute of Education, Nanyang Technological University, Singapore. His teaching and research interests include educational marketing, school leadership, student learning approaches, intercultural communication competence, and cross-cultural aspects of service quality perceptions, as well as customer satisfaction and motivation. In recent years he has increasingly focused on measurement, evaluation and psychometrics, includingdata analysis techniques such as Rasch analysis and hierarchical linear modeling.