70th anniversary

Celebrating our impact | 1951-2021

In the 2021–2022 academic year, Stockholm International School marks its platinum jubilee.

For seven decades, we have made a huge contribution our students, our families and to the city of Stockholm. In 1951, our founding year, the SIS student body boasted 15 different nationalities. Today, we challenge and inspire almost 700 students from nearly 60 countries with our globally recognised academic programme.

70 for 70 logo


To celebrate our 70th Anniversary, we’re launching our 70FOR70 appeal to take our fundraising to the next level.

Explore the ways in which you can support the SIS Spirit Fund, including 70FOR70, a very special offer by the Chair of our Board of Trustees, Lage Jonason.

Also explore becoming an Oggi Champion, or joining the Director’s Circle.

Special 70th anniversary events

Share your SIS memories

Since our founding in 1951, thousands of students have passed through our classrooms, corridors and playgrounds. We'd love to hear your memories of SIS, see your photographs of your time in Stockholm and find out how your experiences in Sweden have impacted your life.


Our history

Explore the story of the founding of SIS and find out how the school has grown and developed in the past 70 years.

Three small children playing the recorder

Our events

We look forward to celebrating our 70th anniversary through a series of events during the celebratory academic year.

70th anniversary news and stories