The International School of Geneva (in French: Ecole Internationale de Genève), also known as "Ecolint" or "The International School", is a private international school based in Geneva, Switzerland. Founded in 1924 in the service of the League of Nations, it is the oldest and largest operating international school in the world.[citation needed] In the mid-1960s, a group of teachers from Ecolint (Campus La Grande Boissière) created the International Schools Examinations Syndicate (ISES), which later became the International Baccalaureate Organization (IBO) and then the International Baccalaureate (IB).[1] Ecolint is composed of three campuses in and around Geneva, each with its own principal working under the Director General of the Foundation of the International School of Geneva (currently Dr David Hawley) and a Governing Board elected by parents and staff with co-opted members from the UN and Swiss Government.[2] Ecolint is a bilingual school, with instruction primarily in English and French. In addition to the IB, it is a testing centre for the US college boards (SAT and ACT) and the British IGCSE (CIE).[2] Ecolint is a member of the G20 Schools Group. In 2006, the British Guardian newspaper listed Ecolint as one of the best international schools in the world for those seeking a UK-style curriculum (a reference to Campus La Châtaigneraie).[3] According to the Good Schools Guide International, "the International School of Geneva (Ecolint) turns out well-educated, happy students who are comfortable with themselves and ready to move on to tertiary education around the world."[4