The Aristotle University of Thessaloniki (often called the Aristotelian University) is the largest university in Greece and the Balkans. It was named after the philosopher Aristotle and its campus covers 230,000 square metres in the centre of the city of Thessaloniki. Some educational and administrative facilities are located off campus for practical and operational reasons. More than 95,000 students study at the Aristotle University, 86,000 in undergraduate programmes and 9,000 in postgraduate programmes. Furthermore, the Teaching and Research Staff number 2,248 people (716 professors, 506 associate professors, 576 assistant professors, and 450 lecturers), the Scientific Teaching Staff number 84 and the Special Laboratory Teaching Staff 275 people. This is further supported by the 309 members of the Special Technical Laboratory Staff for teaching services and the 1028 members of administrative staff. The primary language of instruction is Modern Greek, but there are a number of courses for international students which are carried out in English, French and German.