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1999
1999
The first bilingual class begins at Minerva Volksschule Basel, the school that later becomes SIS Basel. This lays the foundation for the immersive bilingual educational concept of SIS Swiss International School.
2004 to 2006
2004 to 2006
SIS expands within Switzerland. The foundations are laid for further bilingual schools, including the schools that later become SIS Zürich-Wollishofen and SIS Zürich.
2008
2008
SIS expands into Germany. The first SIS school outside Switzerland opens in Stuttgart-Fellbach, marking the beginning of the network's international growth.
2009 to 2011
2009 to 2011
The SIS network continues to grow with the opening of new schools in Switzerland and Germany. In 2011, the first students graduate from SIS Zürich with the bilingual Matura, with some also completing the International Baccalaureate (IB) Diploma
2011
2011
SIS expands into Brazil with the opening of SIS Brasília, establishing its presence in South America and further strengthening the international SIS network.
2014 to 2022
2014 to 2022
The SIS network continues to grow. New schools join in Germany, Switzerland and Brazil. In 2022, SIS expands into Italy, and Escola Nova in Rio de Janeiro becomes part of the SIS network.
2024
2024
SIS expands into Italy with the opening of SIS Milano-Basiglio, the first SIS school in the country. The SIS network now comprises 19 schools across Switzerland, Germany, Brazil and Italy.
2026
2026
SIS continues its international expansion by entering the Spanish market. Colegio Suizo Madrid joins the network as CSM by SIS, becoming the first SIS school in Spain and bringing more than 55 years of educational experience to the SIS Group.
The Klett Group
SIS is a company of the Klett Group.
Founded more than 100 years ago, the Klett Group is one of Europe’s leading educational companies and is active in 24 countries. Its portfolio includes both traditional and digital educational media for everyday use in schools, as well as teaching resources, specialist publications and classic literature. In addition, the Klett Group operates a wide range of educational institutions, from day-care centres and schools to universities for on-campus and distance learning.
