SIS Switzerland School Locations SIS Männedorf-Zürich Education Levels Bilingual learning on a daily basis, introduced as early as in kindergarten and primary school – education for life.Find out everything you need to know about the education levels on offer at SIS Männedorf-Zürich. Learn more about the continuous education from kindergarten to primary school at SIS – one of the major advantages of our bilingual educational concept. The SIS Swiss International School Männedorf-Zürich offers bilingual education from kindergarten to grade 6 of primary school. On all levels, classes are held both in German and English. However, bilingualism is no prerequisite for admission.