International School Rheintal is a private international day school in Buchs, Switzerland, serving families across the St. Gallen, Liechtenstein, and Vorarlberg region. It offers English-language education from preschool through Grade 12 and is both an IB World School and CIS-accredited, giving students a recognised international pathway outside Switzerland's larger school centres. Its curriculum includes the International Baccalaureate Primary Years Programme, Middle Years Programme, and Diploma Programme, with a student-centred approach that emphasises inquiry, critical thinking, and personal development. What differentiates ISR is its regional role: it provides a full international education for families living and working in the Rhine Valley economic area. Families often choose ISR for its smaller community, cross-border accessibility, academic continuity, and university preparation through the IB Diploma.

Located in the beautiful Buchs, St. Gallen, International School Rheintal has been providing exceptional education since 2002. With a student body of 163+ students from around the world, the school offers a truly international learning environment with instruction in English.