Nancy Law is Professor and Director of the Centre for Information Technology in Education, and Head of the Division of Information and Technology Studies in the Faculty of Education at the University of Hong Kong. She has served on the International Steering Committee of the Second International Information Technology in Education Study (SITES) and the Steering Committee of the APEC Cyber Education Consortium. She has recently been elected to the Board of the International Society of the learning Sciences and is currently a member of the Steering Committee on Strategic Development of Information Technology in Education of the HKSAR government. She has conducted numerous evaluative studies as well as research and development projects related to Information Technology in schools. Willem J. Pelgrum is affiliated with the University of Twente, director of a private consultancy firm (Educational Assessment and Monitoring) and adjunct professor at the Danish University of Education (Comparative education and ICT in education). His main professional background is in international comparative educational assessments. He was Coordinator of the IEA Computers in Education studies, SITES Module 1 and SITES2006. He has authored and edited several books on ICT in education. Tjeerd Plomp is Emeritus Professor of Education of the University of Twente, where he served as Dean of the Faculty of Educational Science and Technology from 1982 till 1985, and as Chair of the Department of Curriculum from 1990 to 1998. He was Chair of the IEA from 1989 to 1999. In the IEA he served as Chair of the Computers in Education studies, the Third International Mathematics and Science Study (TIMSS) and the IEA Second International Technology in Education Study (SITES). He is the Study Director of the IEA SITES 2006 study, a survey of schools and (Mathematics and Science) teachers on pedagogical approaches and the use of ICT in schools.