International School of Lausanne is a private, not-for-profit international day school in Le Mont-sur-Lausanne, Switzerland, serving students from ages 3 to 18. Founded in 1962, ISL is one of the clearest International Baccalaureate choices in the Lausanne area, offering the full IB continuum through the Primary Years Programme, Middle Years Programme, and Diploma Programme. Its identity is built around inquiry-led learning, academic rigour, international mindedness, and a strong school community of students from more than 60 nationalities. ISL also offers a recognised High School Diploma alongside the IB Diploma, giving senior students an additional academic credential. Families often choose ISL for its not-for-profit ethos, consistent IB pathway, modern campus, student support, and strong preparation for universities in Switzerland and worldwide.

Located in the beautiful Le Mont-sur-Lausanne, Vaud, International School of Lausanne has been providing exceptional education since 1962. With a student body of 900+ students from around the world, the school offers a truly international learning environment with instruction in English & French.