Ruamrudee International School (RIS), founded in 1957 by the Roman-Catholic Congregation of the Redemptorists, is the mother school of Swiss School Bangkok as it were; for license issues, Swiss School Bangkok is its German-speaking section. RIS enrolls approximately 1,800 students, offers the American curriculum as well as the IB and provides RIS Swiss Section-Deutschsprachige Schule Bangkok important school infrastructure (auditorium, English library, canteen, clinic, swimming pools and other sports facilities) as well as administrative services.