William Powell has served as an international school educator for the past 30 years in the United States, Saudi Arabia, Tanzania, Indonesia, and Malaysia. From 1991 to 1999, he served as the chief executive officer of the International School of Tanganyika in Dar es Salaam, Tanzania, and from 2000 to 2006, he served as headmaster of the International School of Kuala Lumpur. He is the coauthor, with his wife Ochan, of Count Me In! Developing Inclusive International Schools (2000) and Making the Difference: Differentiation in International Schools (2007), Becoming an Emotionally Intelligent Teacher (2010) and How to teach now: Five Keys to Personalized Learning in the Global Classroom (2011). Bill's most recent book is entitled The OIQ Factor: How teachers can raise the Organizational Intelligence of Schools (2013). Bill and Ochan are currently working on a project, The Next Frontier: Inclusion to support the inclusion of special needs children in international schools. They are focusing their attention on teacher professional development, school leadership and governance training and serve as consultants for Education Across Frontiers. When he is not facilitating teacher workshops or speaking at conferences, Bill can be found in the French Pyrenees where he fights (together with a handful of sheep) an annual battle with the European bramble.