To ensure we remain one of the best in our field, we are committed to upholding a strong, sustainable business model.

With the establishment of SIS Basel in 1999, we laid the foundations for a success story that has since taken us from Germany to Brazil and is set to take us even further afield in the future. As part of the Kalaidos Swiss Education Group and the Klett Group, we benefit from a unique network of schools and educational organisations that is concerned with good education on a daily basis.


SIS schools are all recognised by the regional educational authorities and are firmly established educational institutions in the German schools landscape. At the same time, our schools are part of a growing SIS network within Germany and abroad.



SIS Swiss International School gemeinnützige GmbH is a joint venture of Kalaidos Swiss Education Group and Klett Group Germany.

Quality Policy

SIS guarantees a high level of educational and quality standards:

  • Structures and processes at SIS locations are continuously evaluated and developed.
  • The secondary schools at SIS Friedrichshafen, SIS Stuttgart-Fellbach, SIS Ingolstadt and SIS Regensburg are accredited International Baccalaureate (IB) World Schools.
  • All SIS schools periodically participate in national and international benchmarking tests.



Ambros Hollenstein and Verena Simpson


SIS Swiss International School gemeinnützige GmbH
Rotebühlstraße 77, 70178 Stuttgart
Phone +49 (0)711 6672 1380