Executive Board

AGIS is committed to articulating and promoting high standards of educational quality and ethical behaviour for its members. Members are expected to commit themselves to the same high standards and ethical behaviour in their practices.
The AGIS Board is made up of volunteer school leaders who model and support the mission and the Principles of Good Practice of AGIS.
Responsibilities of the Board members include:

  • overseeing the operating budget
  • being responsible for and implementing the policies of AGIS
  • monitoring and evaluating programmes and services of AGIS
  • vetting applications for association membership and recommending new membership as well as  annual association membership fees
  • representing the AGIS membership to outside agencies

Meeting on a semi-regular basis, Board members also prepare for an Annual General meeting for all AGIS school leaders and Business Managers.


Timothy Kelley (Chair)

Director - International School of Stuttgart

Timothy Kelley, the Director of the International School of Stuttgart, an International Baccalaureate World School, has been an educator for 30 years. Formerly the Head of Ross School in East Hampton New York, Tim has also served as the Headmaster for the Leysin American School in Switzerland. While at Ross School, Tim was privileged to work with some of the world’s leading educational experts including Howard Gardner and Kurt Fischer. In Switzerland, as a member of the Executive Committee for the Swiss Group of International Schools, he directed conferences and was responsible for in-depth studies of technology integration in the classroom and mother tongue proficiency. Some years ago, Tim was elected to the Board of the Association of German International Schools and currently serves as the Chair of the Board. He is a founding member of the Stuttgart International Rotary Club and has worked with the International School of Stuttgart for nearly 9 years.


Stephan Handwerker

Managing Director - International School Hannover Region

Stephan Handwerker started to work as Managing Director for the International School Hannover Region in August 2012. Before joining ISHR he was MD of the German Branch of Hurtigruten, the Norwegian Cruise Ship Company. In previous employments he gathered experience in leading positions at companies in the water damage restoration and the automotive supplier business.


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Simon Head

Director - International School of Düsseldorf

Simon Head has over 25 years’ experience working in international education (IB) in Australia, Portugal, Kenya, Oman and Germany.  He is currently the Director of the International School of Düsseldorf where he leads innovation to transform the paradigm in education.  He has also been the head of two other IB World Schools, Al Sahwa Schools in the Sultanate of Oman, and the Aga Khan Academy Nairobi, Kenya.  Simon helped collaborative school networks in East Africa and the Middle East including serving as the secretary of the Middle East IB Association (MEIBA).  

Simon believes associations of high quality international schools can be a great support for each other and become a powerful voice for change.     He would bring to AGIS extensive experience with organising conferences; dealing with recognition; negotiating with ministries of education and accreditation bodies.


Rachel Hovington

Director - International school hannover region

Before her involvement in the AGIS Board, Rachel served on the Board for the Center for The Advancement and Study of International Education (CASIE) and the Curriculum Advisory Committee for the Center for Civil and Human Rights. She has led workshops on International Mindedness with Faculty and Staff in schools and locations all over the world as well as having consulted for aspiring IB schools that wish to enhance their International programs. As a Principals Training Center (PTC) instructor, Rachel values deeply the role that professional growth has on building schools that embody leadership for learning.

Rachel has led and worked on teams accrediting schools for the Council of International Schools, as well as for AdvancED and the Southern Association of Colleges and Schools Council on Accreditation and School Improvement (SACS CASI). Rachel joined ISHR from Atlanta International School in the USA and previously lived and taught in England and in Malaysia.

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Cathie Mullen

Director (Education) - International School Augsburg - ISA

Cathie Mullen has lived in Germany since 1992 when she began teaching at the International School of Stuttgart. She later held the position of Lower School Principal at the same school. Other assignments include running her own drama school, teaching in an Irish state school and at Lyford Cay School in the Bahamas. She has been the Director of International School Augsburg since it was founded in 2005. She has been a member of the AGIS board since 2015.


David Smith

Director - Leipzig International School

David Smith hails from Bristol in the West of England, and holds degrees from the Universities of York and London. For many years an enthusiastic teacher of Literature, he currently does his teaching in the IB’s Theory of Knowledge programme. After working in public and private schools in England, he embarked on an international career, which has taken him to IB World Schools in Argentina, Colombia, Uruguay and Portugal: he spent eight years as head of the British Schools of Montevideo, and fourteen years leading St Julian’s School, Lisbon. He has been head of Leipzig International School since 2014, and joined the AGIS board in 2016.


Timothy Thomas

Director - Munich International School

Timothy Thomas has served at international schools in Germany for the past 14 years as a teacher, counsellor, MYP Coordinator, DP Coordinator, assistant principal/principal, deputy director and director. He served as liaison to the Zeugnisanerkennungsstelle in Saxony and helped negotiate legal recognition of international schools by the government in that state. He served at Dresden International School when it was a small, fledgling school, still in the throes of establishing itself and building programmes, and he now serves at Munich International School, which is a well-established school with a proud history and a high level of complexity.

Having studied in both English-speaking and German-speaking contexts, he can negotiate verbally and in writing in both English and German.