Bambi Betts is the Director of the Principals’ Training Center for International School Leadership(PTC) as well as the CEO for The Academy for International School Heads (AISH). She was formerly Director of Escuela Campo Alegre and has held principalships in three international schools.  Bambi has been actively involved with the PTC since its inception as a course developer, trainer, and co-trainer for the Essential Skills courses. She is a leading consultant on a wide range of topics in international schools and conducts on-site training modules worldwide. Bambi has written many articles on practical ways to improve international schools and authors a regular column on the PTC pages of The International Educator (TIE).

Christopher Bowman took up the post of Director of the International School of Luxembourg as of July 2007.  He worked the previous two years as the Associate Superintendent with Educational Overseas Services, Ltd., with his work focused primarily in Egypt and Dubai. Prior to that, Chris was Director of the Bavarian International School, Germany and has also served as Director of the Copenhagen Int’l School and Head of Port Moresby International School in Papua, New Guinea.  He was previously an administrator in a range of K-12 schools in the South Australian government educational system over a period of seventeen years, before serving for three years as a District Superintendent of Education. He has served as  Chairman of the ECIS Board of Trustees and continues to work on ECIS projects. Chris is a graduate of the PTC Essential Skills Program and has worked as a co-trainer with the PTC  since 2000. He is also a trainer with the Covey 7 Habits Program, and the Conflict Resolution Network.

Nick Bowley is the Head of Beijing City International School. Previously, Nick was the Head for six years at the International School of Tianjin, and the Head of Icardia Int'l School in Syria.  He has also held administrative positions in international schools in Tanzania and Jordan.   Nick serves on the ACAMIS board and the board of the Rufiji Leprocy Trust.  Nick returns to the PTC again this summer as co-presenter of The Effective Principal: From Theory to Practice, in London, 12-18 July.

Gordon Eldridge was the Principal of K. International School in Japan from the time the school was founded in 1997 until 2005. Schooled in Australia, Gordon originally trained as a foreign language teacher (German), and has taught ESL and history. He is currently undertaking a PhD with research focusing on curriculum implementation and is also a researcher for the Principals' Training Center(PTC), Teacher Training Center(TTC) and The International Educator (TIE).  Gordon is a graduate of the PTC's Essential Skills program and has co-trained for the PTC's Summer institutes for the past five years.

Lee Fertig is currently the Director of the American School of Barcelona (ASB) and has twenty-five years of school administration and teaching experience including three international schools (in Ethiopia, Brazil, and Spain), as well as schools in New York City and Minneapolis. Lee also worked as an adjunct professor in the College of Education and Human Development at the University of Minnesota and was also a consultant for several companies that provide educational software and services to K-12 schools. Lee has been a guest speaker and presenter at various teacher educational programs. His interests in intercultural education and the role of context-driven effective schooling are at the core of his educational philosophy.

Nikki Gundry  is the PTC's on-site coordinator for the Summer Institutes in Miami.  Based in the U.S. in Tennessee, she is a music and drama teacher who has helped coordinate Principals' Training Center programs since 1998.  Nikki is also the Corporate Advertising Coordinator for The International Educator (TIE), an educational newspaper and website serving international schools worldwide.

Pat Handly    Throughout her 30+ years in education, Pat has held many different positions both in the US and overseas to include elementary teacher, school psychologist, college lecturer, elementary school principal, and, most recently, educational consultant and teacher trainer for Houghton Mifflin International and Great Source Professional Trainers Group. As a principal, Pat worked in three different International Schools in the Caribbean. In her role as consultant, Pat has traveled to more than 25 countries working with teachers to develop English language literacy programs for speakers of other languages. Pat has been associated with the PTC since 1991 as a participant, site coordinator, co-trainer for the Assessment course and Creating Effective Schools Course, For the past four summers, Pat has been a lead trainer for the Instructional Supervision Course. 

William Powell  has been involved with international education for almost thirty years serving as a university lecturer in Saudi Arabia, Secondary Headmaster and CEO at the Int'l School of Tanganyika, HS Principal at Jakarta Int'l School, and most recently the Headmaster of the Int'l School of Kuala Lumpur. Bill, along with his wife Ochan, are now focusing their attention on teacher professional development. Bill is the co-author of Count Me In: Developing Inclusive International Schools (2000) and Making the Difference: Differentiation in International Schools (in preparation). He is the author of numerous articles on educational leadership, school improvement and governance and is a frequent presenter at educational conferences.  Bill has served on the board of directors of the Association of Int'l Schools in Africa (AISA), the Association for the Advancement of International Education (AAIE) and the Academy of International School Heads (AISH). Currently, Bill is the Associate Director of Education Across Frontiers.  

Sarah Putnam  is an Educational Consultant for Eduscapes. She has 18 years administrative experience and has served overseas as Deputy Superintendent of Shanghai American School, as well as Curriculum Coordinator for the American School in Japan. Stateside, she ran two school districts in Montana as both principal and superintendent for a total of 11 years. Sarah has seven years of teaching experience, plus four years teaching dyslexic students in grades 1-8. She is a doctoral candidate in Educational Leadership, has a Master’s Degree in Education from UMASS, and an A.B. from Harvard University. Sarah has an extensive background in reading research and school improvement processes, and has conducted numerous workshops on both topics. Most recently she started a company called Eduscapes through which she provides technical assistance in the form of administrative support and teacher workshops to schools striving to improve literacy instruction.

Susan Napoliello  spent eleven years in international schools serving as principal in Venezuela at Escuela Campo Alegre and in Malaysia at the IS Kuala Lumpur. She began her career in California where she held positions as a classroom teacher, reading specialist and principal. Susan has Masters Degrees in Educational Leadership and Reading. She and Bill Powell, former Headmaster at IS Kuala Lumpur, developed a supervisory strategy for 'walking through' classrooms which was described in an ASCD article (February 2005). Susan currently serves as an educational consultant and resides in San Francisco.

Julie Ryan is currently the Lower School Principal at the American School in London. She has previously been a principal in two suburban California schools, one on the campus of Stanford University. She has also worked as a reading specialist and teacher at the American School of Paris. Julie was selected as National Distinguished Principal for 1999 from the Office of Overseas Schools. Julie has been a professional trainer for the California School Leadership Academy, and a presenter at numerous professional development venues.

John Sperandio is the founding Director of Stonehill International School.  He has more than thirty years experience as an IB teacher, a physicist/engineer, a school business manager and as a director of international schools. He joined the U.S. Peace Corps school. and served as a teacher in an Ed. project in Uganda. Followed by ten years of teaching math, physics and accounting in Kuwait, Malta and Tanzania.  His first administrative experience came in Malta, helping establish the parent foundation and governing body of the Verdala School. In Tanzania he followed as the School Business Manager for IS Tanganyika. John later returned to the USA as an engineer and scientist for Dames and Moore to model severe accidents in nuclear power stations and developed a multi-user computer interface, SAGE, for Gabor, Kenton and Associates to train power station operators in severe accident management. He returned to international schools as a financial consultant and was appointed Director of Support Services at Escuela Campo Alegre. In 1998, John was appointed the Director of the IS Azerbaijan, and in 2003, at  IS Dhaka. In January 2008, having added two new countries to the IB World map, John accepted a commission from the Embassy Group to develop the first accredited, IB World School in Bangalore to offer all three programmes of the IB.