Admissions Contact
Children stand with two caregivers in front of the school entrance.

Our Team, Our Opening Hours and How to Reach Us

Greetings from the Principal

Dear visitors

A very warm welcome to SIS Pfäffikon-Schwyz, a private bilingual day school with approximately 160 students, from kindergarten through to college. The bilingual educational concept of SIS Swiss International School has been successfully implemented here since 2016. The school community is characterised by a vibrant and nurturing multicultural environment and represents more than twenty nationalities. Please take some time to explore our website and discover the many exciting facets of our school, and do not hesitate to contact us. I look forward to welcoming you and your family to SIS Pfäffikon-Schwyz!

Get to Know Our School Management Team

portrait of Christian Rütti
Christian Rütti


More about Christian Rütti

Christian Rütti


Christian Rütti is a bilingual Swiss citizen who was born and raised in Johannesburg, South Africa and moved to Switzerland in 2001.


Before stepping into the role of principal at SIS Pfäffikon-Schwyz in August 2020, he was principal of a private school in Basel for two years. Prior to that, also in Basel, he was managing director and personnel manager of a language school for adults for several years. An additional 12 years of teaching experience before that, both in Switzerland and in South Africa, round off his professional experience within the field of education. Christian Rütti’s qualifications include a bachelor’s degree in education and a Swiss diploma in the field of personnel management.


His professional aim has always been to do everything possible to motivate and guide students and staff alike to achieve their full potential. He is a firm believer in encouraging students to nurture a healthy and balanced lifestyle and a positive attitude towards learning and life in general.


Christian Rütti is an avid cyclist and outdoor enthusiast who loves to explore nature with his family throughout the seasons. He enjoys working and interacting with people from various cultures.

Portrait of Andrea Oettinger
Andrea Oettinger

Head of Kindergarten and Primary

More about Andrea Oettinger

Andrea Oettinger

Head of Kindergarten and Primary

Andrea Oettinger is an American who was born and raised in Boston.


For her undergraduate degree, she attended the University of Pennsylvania in Philadelphia where she studied elementary education. After completing her bachelor’s degree, she moved west to Colorado and taught for six years in the Denver Public Schools. Andrea Oettinger went on to attain a master’s degree in education policy at the University of Colorado and then moved back to Philadelphia where she completed a doctorate in education in Teaching, Learning and Curriculum at the University of Pennsylvania. From 2013 to 2017, Andrea Oettinger worked as the Director of Mathematics for several schools in the Philadelphia area, which involved training teachers and leaders on implementing conceptual mathematics instruction in the classroom.


Andrea Oettinger is an avid skier who grew up in the cold, small mountains in New Hampshire and Vermont. She travels to the mountains as much as possible to ski in the winter and hike in the summer. She also loves to read in her free time.

portrait of Balz Weber
Balz Weber

Head of Secondary and College

More about Balz Weber

Balz Weber

Head of Secondary and College

Balz Weber comes from Switzerland and grew up and went to school in Biel/Bienne and the Zürich Highlands. He completed his training as a college teacher of French and Spanish at the University of Zürich in 1991.


After ten years of teaching at public high schools, he spent a few years in Thailand with his family and taught at the Swiss school there. In 2002, he played a key role as a founding member in setting up the newly founded college in Menzingen in the canton of Zug. After many years in Menzingen, Balz Weber moved to Madrid to teach at the Swiss School where he was also head of Secondary I and II. Since August 2023, he has been head of secondary school and college at SIS Pfäffikon-Schwyz.


Balz Weber is married to an Italian woman and has three grown-up sons who grew up bilingual (Italian and German). He is very motivated to help set up the newly opened bilingual college at SIS Pfäffikon-Schwyz. He is also looking forward to getting to know all the students. It is of crucial importance to him that the teachers succeed in maintaining the motivation of the students until the end of their school careers and in promoting not only their professional but also their personal and social skills.

The Team of SIS Pfäffikon-Schwyz

Our educators make our educational concept tangible, every single day. Our dedicated team is committed to the individual development of our students. To keep our educational work at a consistently high level, our team regularly takes part in internal and external further training.


Education Is a Valuable Resource, Which Is Why We Value Transparency


Education Is a Valuable Resource, Which Is Why We Value Transparency

SIS Swiss International School is a private educational institution that is financed solely from school fees and does not receive subsidies from the Swiss national or cantonal governments. We offer high-quality education as a service – and we are committed to offering this service in a transparent way.


Learn more about the school fees

Two primary school girls sit at the desk in class and write something.

Teaching and Supervision Hours

At our day school, students are supervised between the hours of 7:30 a.m. and 6 p.m.


The exact lesson and supervision times vary between the different year levels. 

Holiday Calendar 23/24

The school adheres to the official school holiday calendar of the canton of Schwyz.


Start of academic year 16 August 2023  
Autumn break 2 October to 13 October 2023  
Christmas break 25 December 2023 to 5 January 2024  
Winter break 26 February to 8 March 2024  
Spring break 29 April to 10 May 2024  
Summer break 8 July to 9 August 2024  


You are invited! Have a look at our upcoming events.

11 June 2024

SIS Pfäffikon-Schwyz: Open House. Register now!
Start: 08:30
End: 12:00

SIS Pfäffikon-Schwyz

SIS Swiss International School

Eichenstrasse 5
8808 Pfäffikon SZ

Phone: +41 55 415 44 00




Office Opening Hours

Monday to Friday: 7:30 a.m. to 12:15 p.m. and 1:15 p.m. to 4:30 p.m.

Wednesday: 7:30 a.m. to 12:15 p.m.

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