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Leadership Team

The overall operational responsibility of the school, in accordance with the School Articles of Association, rests with the School Director and not the Board of Trustees.

The Director shares strategic and pastoral initiatives, as well as operational review, with his Whole School Leadership Team, which consists of the Business Manager, the Division Principals, the Head of Campus in Sindelfingen and the Director of Admissions and Enrollment.  Each of them is tasked with the general management of his/her respective department as well as providing for smooth transitions from one department into another.

Meet the Director and the Leadership Team:

ISS Director


Tim has been an educator for over 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. He began his career at the Noble and Greenough School in Dedham Massachusetts (USA) where he was an award-winning teacher and served as Department Chair for both the History and Performing Arts departments. Tim is the Chair of the Board of the Association of German International Schools and is a member of the Academy for International School Heads and the European Council of International Schools.  He is a recipient of a Klingenstein Fellowship on Educational Leadership, has been a speaker and presenter for TAISI (India), AAIE and AGIS conferences and frequently presents in schools throughout Europe, for the American Chamber of Commerce in Stuttgart and Atlanta. He is a founding member of the Stuttgart International Rotary Club and has worked with the International School of Stuttgart for over 10 years.

Tim and his family are thoroughly enjoying their time in Stuttgart. Both he and his wife, a native of Wiesbaden, are thrilled to be a part of such a vibrant and exciting community both at the school and in the city itself.

Business Director


Originally from Schwaben, Jürgen joined ISS mid 2015 after many years of experience in a leading position in the field of Finance in an international business environment.

Jürgen studied Business Economics and International Business and Management at the University of Applied Sciences in Nürtingen.  His first position upon graduating was with a start-up company in the area of renewable energies where he gained a lot of experience in developing business, setting up company structures and clean processes. Returning to Stuttgart in 2004 he acquired strong knowledge in Finance and Business Management by assisting the CFO of a 500mio turnover enterprise and directing an international team of finance specialists all over Europe and Arabia for many years.

Serving clients as Financial Accounting Advisor on an overseas project recently he furthered his international record and has shown very strong commitment to our school and the whole community since he joined us.

He believes that great things never come from comfort zones!

Lower School Principal, Degerloch


Paul has been teaching in Elementary Education for thirty-two years. He has been employed by the International School of Stuttgart for the past eighteen, working and continually learning, as Lower School Principal and and a member of the Leadership Team. 

He is the Coordinator of the annual Association of German International Schools (AGIS) conference, and Chair of the AGIS Primary Heads Group. Since 2006, Paul has also served as a team member, Co-Chair, and more recently, in the role of Team Chair, on International School Accreditation Team evaluations, for the Council of International Schools (CIS). He is also an online CIS facilitator and trainer for educators across the world in the CIS International Schools Accreditation Protocol. 

Prior to working at ISS, Paul worked in a wide range of schools in England from small rural village primary schools to urban middle schools. He believes that children learn best through inquiry, the engagement of the learner’s curiosity and the facilitation of the connection of new learning with prior experiences and understanding. Paul enjoys reading, cycling, gardening and learning German. He is married, with a young family and lives with his German wife in the local area.

Upper School Principal, Degerloch


Mary-Jane Martin has been employed by the by the International School of Stuttgart for the past 12 years. She has taught as a music teacher from pre-K-12, was HOD of arts for 8 years before becoming IB coordinator, Assistant Principal and, since 2009-10, Principal.

Prior to working at ISS, Mary-Jane taught as a vocal specialist in a wide range of schools in Adelaide and Sydney, Australia. After further study in Heidelberg, Mary-Jane taught in a variety of music centers in Baden–Württemberg.

In the High School years it is essential that each child discover his/her ‘element’. This discovery then guides the subject and program choice process in the diploma years. Mary-Jane’s philosophy of education therefore centers on educating the whole child as an individual. 

The foundation of her relationship with students, parents and colleagues is the cultivation of an environment of openness and trust.  She lives in Stuttgart with her husband and two children, both of whom attended ISS.

Head of Campus, Sindelfingen


Sarah spent the first eight years of her teaching career in primary education, secondary special needs and university undergraduate teaching in the UK. She taught at ISS from 1990 to 1995 before exploring the Waldorf school system, working for a language service and then becoming the founding Director of the Heidelberg International School from 2000 to 2004. In September 2004 she came to the International School of Stuttgart in Sindelfingen. 

Sarah leads the team of pioneering educationalists who have developed a dual-language teaching programme at ISS Sindelfingen. The team is driven by their goal to focus all decision-making on improving students’ learning for understanding. Her professional experiences in a number of start-up schools have been helpful in shaping the learning programme for the Sindelfingen Campus. 

Sarah lives in Sindelfingen with her husband, who is an artist. When time allows, she performs in local theatre productions. Having moved over 20 times, she enjoys living and working in the town she has now called home since 1990. 

Director of Admissions and Enrollment


Matthias Krusch was born in Northern Germany. He completed his schooling in Germany and subsequently moved to England and completed a BA in English and American Literature at the University of Kent and an MA in European Literature at the University of Sussex. After obtaining a Postgraduate Certificate of Education (teaching qualification) from the University of Cambridge he began his teaching career in Guildford, southwest of London. Matthias took up a teaching position at ISS in March 2003. Between 2009 and 2015 he led the Middle School at ISS as Principal and subsequently served as the Deputy Principal of the Upper School until August 2017.  As a principal, student admissions already played a significant part of his work at ISS and with the beginning of the 2017/18 school year Matthias moved into a full-time whole school admissions position.  In addition to his administrative work, Matthias continues to teach IB MYP and Diploma classes in his subject areas, English and German.

His philosophy of education centres on educating the whole child. He sees open-mindedness, tolerance and respect as key elements of his work and the foundation of his relationship with students, parents and colleagues.  Matthias immensely enjoys meeting new families and students, welcoming them to the school and to Stuttgart.

Matthias lives in Stuttgart, together with his wife and his two children. His hobbies include literature, travel, football and cooking.


Human Resources Manager


Judith grew up and attended school in the Heilbronn area.  She subsequently moved to Stuttgart where she studied for her Bachelor’s degree and worked firstly in retailing and then as a Human Resources Manager.

Judith joined ISS in 2017 after a number of years of experience in HR. She appreciates working in Human Resources at ISS because of the internationally minded and diverse environment and the variety of her job - there is never one day like the other and the daily challenges that come with it!

Judith is married and has been living in the local area for more than 10 years now. Her hobbies include playing soccer, running and traveling.