The International School Rheintal is at Werdenbergstrasse in Buchs, in the Rhine valley near the Liechtenstein border. It teaches in English from pre-school to Grade 12 and runs the International Baccalaureate Primary Years, Middle Years and Diploma Programmes, alongside a kindergarten. Thirty-one nationalities are represented. The school is a fully accredited IB World School and holds Council of International Schools accreditation. Its 2021 IB Diploma cohort averaged 36 points, and students completed more than 75 community and personal projects in 2023.