| Event | |
|---|---|
| 1999 | Laying the foundation of SIS bilingual education in Switzerland. The primary school Minerva Volksschule Basel starts with its first bilingual class. This is the basis of what later becomes SIS Basel. The idea of a truly immersive and bilingual school is born. |
| 2004 - 2006 | Expansion in Switzerland. The foundations of the schools that later become SIS Zürich-Wollishofen and SIS Zürich are laid. |
| 2008 | Getting a foothold in Germany. The brand "SIS Swiss International School" is established and the first SIS school in Germany opens its doors in Stuttgart-Fellbach. |
| 2009 + 2010 | Years of growth in Germany and Switzerland. By 2010, SIS Männedorf-Zürich and SIS Schönenwerd have opened their doors in Switzerland.
In Germany, SIS Regensburg, SIS Ingolstadt and SIS Friedrichshafen have started to welcome students into their bilingual schools. |
| 2011 | Expansion to Brazil and first graduation in Switzerland. SIS Brasília opens its doors, while at SIS Zürich, the first class graduates with the bilingual Matura, some students additionally with the International Baccalaureate (IB) Diploma. |
| 2014 | Two more schools join the SIS network. In Brazil, SIS takes over ESB Rio de Janeiro, founded in 1963, which modifies its name to Escola Suíço-Brasileira Rio de Janeiro by SIS Swiss International School.
In Germany, SIS Kassel opens its doors. |
| 2016 | A strong network of SIS schools. SIS Basel hosts the first edition of our annual sports event, the SIS Cup. In Switzerland, SIS Pfäffikon-Schwyz opens its doors.
In Germany, SIS takes over Internationale Schule Villa Amalienhof which continues as SIS Berlin. |
| 2020 | Distance learning. Due to our strong network of schools as well as continuous process optimisation with the help of technology, SIS was quickly able to adapt to the distance learning that became necessary due to the Covid-19 pandemic.
In Germany, SIS Frankfurt opens and welcomes its first students. |
| 2022 | Expansion to Italy and integration of a school in Brazil. In Rio de Janeiro, Brazil, Escola Nova is integrated into the SIS Group and continues to operate as Escola Nova by SIS Swiss International School.
We found SIS Swiss International Schools Italia. |
| 2023 | Commitment to climate neutrality by 2029. After assessing emissions, our companies in Switzerland, Germany, and Brazil developed strategies to reduce CO2, aiming to offset all remaining emissions by 2029. Additionally, we have embedded sustainability practice into SIS schools by launching student-led projects at each location. |
| 2024 | Opening of two more schools. The first SIS school in Italy welcomes children at SIS Milano-Basiglio. In Switzerland, SIS Basel-Allschwil opens its doors.
Change in corporate structure. As of 1 January 2025, the SIS Swiss International Schools Group leaves the Kalaidos Swiss Education Group and becomes directly integrated into the Klett Group, situated within its business unit for day-care centres and schools. |