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Leadership Team

Director - Patricia Baier

Director of Bonn International School Patricia BaierPatricia Baier was born in Singapore and grew up and studied in Great Britain. She completed her Post Graduate Certificate in Education at Warwick University, specialising in History and English, and after teaching in England moved to Germany where she taught at the University of Hannover and at a German vocational school. She has been involved in international education for the past 20 years and was the Director of the International School Hannover Region from 2003 to 2016 and Chair of the Association of German International Schools from 2011 to 2015.

Patricia is deeply committed to the programmes of the International Baccalaureate because of their relevance to 21st century learning and their emphasis on preparing open-minded, compassionate and responsible citizens. She strongly believes that an excellent school is one with a strong sense of community, in which everyone is valued and respected for who they are, and which inspires all students to achieve their very best.

Patricia’s husband is German and they have two daughters and a grandchild. In her spare time she enjoys reading, hiking and cycling.

Secondary School Principal - William Tragert

Secondary School PrincipalWill grew up on the east coast of the United States. He received his undergraduate degree from James Madison University and his Master’s of Educational Leadership from George Mason University. He has worked as a Secondary math teacher and administrator in the United States, China, and now Germany. Will has worked in a wide variety of school settings and has experience teaching and leading in an IB environment.

Professionally, Will is passionate about creating inclusive and nurturing school communities. He believes every child is capable of learning at high levels and has the right to feel safe, happy, and empowered during each school day. Will serves as a Western Association of Schools and Colleges Accreditation Visitor and enjoys the challenge of helping schools shape their strategic plans to move them towards their Mission and Vision Statements. Will relaxes by watching movies, cooking, playing sports, or spending time with family and friends.

Will joins the Bonn community with his wife who teaches Learning Support in the Primary School. Together, they have three children, who are all excited to attend BIS!

Primary School Principal - Alex Whitaker

Alex was born in the UK and grew up on the North Norfolk coast in England, where many of his friends and family still live and where he considers home when not in Germany.

Alex studied in Bedford and Cheltenham, earning a B.Ed. (Hons) in Primary Education. Work in schools in Suffolk and Norfolk followed before Alex studied special needs education at Cambridge University, working with young adults with complex learning difficulties. He gained a qualification for teaching the visually impaired at Birmingham University. Alex then became team leader for visual impairment at Norfolk County Council where he was responsible for supporting up to 400 schools. From there, Alex moved to Stuttgart where he was a teacher, Assistant Principal and PYP Coordinator. 

Alex is passionate about teaching, learning and finding ways of making a difference to every child. He firmly believes the PYP is the best tool possible to fulfill our school mission and provide a relevant, challenging, inspiring and supportive learning environment for children as they develop the knowledge, skills and aptitudes they will need in our changing world.

Alex has a German wife and two German/English daughters . He loves cycling, gardening, hiking and spending time with his family. Also sometimes known as Dangerboy, Alex enjoys sharing the skills he learned at circus school such as physical theatre, juggling and the art of being a clown. 

Business Manager - Sabine Schattenberg

Business ManagerSabine Schattenberg grew up in the Ruhr Valley region of Germany.  She studied Psychology and Pedagogics at the University of Münster and obtained a master’s degree (Dipl.Psych.) in Clinical Psychology.  She subsequently moved to the United States and lived in California, New Mexico and Virginia. She studied Accounting at the University of California in Los Angeles, passed the unified CPA exam with honors and since 2001 is licensed as a Certified Public Accountant in the Commonwealth of Virginia. Sabine worked in leading administrative positions in several software companies in Southern California. In Virginia she worked in accounting firms serving small and medium sized clients.

Sabine and her family moved to Bonn in 2001 where since she has continued her career as the Business Manager at Bonn International School.

She is married to a scientist and they have two grown-up sons. In her leisure time, Sabine enjoys working out with her girlfriends, gardening, reading and, if time allows, travelling and visiting her sons in Spain and The Netherlands.

Head of Student Services and Operations - Jo Junglas

Head of Student Services and OperationsJo Junglas studied in Sheffield, England and qualified as a teacher of Physical Education and Social and Personal Education. For many years, Jo worked as a Social Educationalist with disadvantaged children and young adults. During her time working for the City of Meckenheim, Germany, Jo was a member of many Rhein Sieg Kreis committees concerned with social work, sport and youth.

Jo joined Bonn International School as the Extracurricular Sports Coordinator in August 2000. During her time as EC Sports Coordinator Jo grew the EC Programme and engineered BIS membership into both the ISST and NECIS organisations. She was also a founding member and first Head of the GISST organisation. During her time at BIS, Jo has held several positions of responsibility, including PE Subject Leader, CAS Coordinator, Personal and Social Education Coordinator, Head of the MYP Strategic Working Group and Grade 6 – 8 Pastoral Care Head.

Jo is passionate about enabling and empowering all students to aspire and work towards reaching their true potential, be it, academic, social or sporting and is a positive example of life long learning. Throughout her time at BIS Jo has continued to be involved in a variety of committees and other learning opportunities and has gained many qualifications, including Clinical and Pastoral Counselling and Excellence in Leadership from the University of London. She also has many coaching and expedition leading qualifications and has organised annual water and mountain based Outdoor Pursuits trips for many years.

Married with two children, she speaks German, plays football for a local German team and regularly participates in 10K races, half marathons and marathons.