International School Rheintal As a leading IB World School, the ISR offers an internationally recognized education in English with the International Baccalaureate (IB). The ISR welcomes students between the ages of 3 and 19 and, after graduating with the IB diploma, gives them access to high-ranking universities worldwide. The focus here is on an open, international community, individual personal and academic support and the aim of training globally-thinking leaders of the future. The IB program allows for a seamless transition between IB schools worldwide. In this way, the ISR makes an important contribution to the attractiveness of the region for international skilled workers and their families and thus strengthens the business location Buchs. More about what the International School Rheintal offers