Saint-Charles International School is a prestigious Swiss boarding and day school offering a truly unique educational experience in the heart of Porrentruy. Founded in 1897, Saint-Charles unites over a century of academic excellence with a modern, globally minded approach to learning.

Our boutique-style environment ensures that every student is known, guided, and inspired to reach their highest potential. Through small class sizes, personal mentorship, and individualized learning pathways, we nurture not only academic distinction but also character, creativity, and leadership.

At Saint-Charles, tradition meets innovation. Students benefit from an exceptional academic offering that includes the bilingual Swiss Maturité (French–English), the International Baccalaureate (IB) Diploma, and the Saint-Charles High School Diploma, both taught in English. This diverse choice of programmes provides seamless access to leading universities worldwide.

Our historic campus, with its refined architecture and state-of-the-art facilities, offers an inspiring and secure setting for growth and discovery. Within our vibrant international community, students find a sense of belonging while developing the confidence, independence, and perspective to thrive in a rapidly changing world.

Saint-Charles International School is more than a school — it is a place where heritage, excellence, and individuality come together to create an exceptional educational journey for the next generation of global citizens.

We recognise that every child has individual needs and a unique approach to learning. By maintaining small classes, our teachers are able to truly get to know each student and tailor programmes to reflect their goals and learning styles. Every student is valued, understood and supported to make the most of their educational journey.
Saint-Charles students stand among the best. With exceptional results across the Swiss, IB, and High School Diploma programmes, they combine intellectual precision with creativity, independence, and global perspective.
Saint Charles boasts an exceptional track record, with 100% of its graduates gaining admission to some of the world’s most prestigious universities, including EPFL, ETH Zurich, Stanford University, Cornell University, King’s College London, and the University of Edinburgh.
Beginning in Grade 9, students benefit from regular meetings with our university counselor, who provides personalised guidance in selecting the right academic pathways, countries, and institutions to help them achieve their goals.

At Saint-Charles, education transcends traditional boundaries. Our co-curricular offerings are meticulously designed to nurture well-rounded individuals, fostering growth in areas that complement academic pursuits.
Athletics:
Engaging in sports is integral to our philosophy. From horse-riding and tennis to swimming and ice hockey, our athletic programs instill discipline, teamwork, and resilience. These activities provide students with opportunities to challenge themselves, develop leadership skills, and cultivate a spirit of collaboration.
Cultural Enrichment:
The arts play a pivotal role in our curriculum. Students are encouraged to participate in various cultural activities, including music, drama, and visual arts. These endeavours not only enhance creativity but also promote self-expression and cultural appreciation.
Academic Clubs:
Our academic clubs, such as the STEM, MUN, AI and Business clubs offer students platforms to delve deeper into subjects of interest. Participation in competitions fosters critical thinking, problem-solving abilities, and a passion for learning.
Whether included or premium, our extracurricular programmes help students explore new interests, develop skills, and build lasting connections.
Our Weekend Activity Programme invites students to venture beyond their familiar boundaries, engaging in experiences that deepen in challenge and sophistication. Each weekend unveils fresh opportunities to refine skills, uncover hidden talents, and cultivate confidence.

Quiet study spaces and access to the library support intellectual pursuits, while leisure is enriched through the gym, swimming pool, and refined common areas designed for reflection and connection.
Boarding at Saint-Charles transcends mere accommodation; it is a distinguished journey that cultivates independence, confidence, and an enduring sense of belonging.