The International School of Geneva, also known as Ecolint, is a private international school based in Geneva, Switzerland. It is the oldest and largest operating international school in the world. The International Baccalaureate (IB) programme, which most anglophone and many francophone students at the school follow, was created at La Grande Boissière campus. Ecolint is a bilingual school, with instruction in languages such as French, English, Spanish, Chinese or German.