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The International School of Sion has now been authorized as a Cambridge school.

Our school is a Cambridge International School, registered with Cambridge Assessment International Education, part of the University of Cambridge. Our programmes inspire students to love learning, helping them discover new abilities and a wider world.

Cambridge International School
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Admissions are open !

2026–2027
Enroll Now

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The International School of Sion (ISSion) aims to prepare students for successful higher academic studies

Our School

Located in the heart of Valais, ISSion provides outstanding education to both local and international students.

Academics

ISSion welcomes students from 14 to 18 years old (preparatory classes and secondary).

Student Life

Recognizing the importance of intellectual, physical and emotional well-being, ISSion places a special emphasis on the range of activities available to students.

Admissions

We have a rolling admissions policy. Feel free to get in touch with us for details.

Contact

Have any questions? Feel free to contact us!

Discover what makes our school unique

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Preparing for
Summer Camp

Should you want to participate in our Summer camp, make sure to book ahead of time. Just follow the link below and you will be on your way.

Sign up now

Preparing for Summer Camp

Should you want to participate in our Summer camp, make sure to book ahead of time. Just follow the link below and you will be on your way.

More Info