University of Thessaloniki, the University of Macedonia and the International Hellenic University. Aristotle University was founded in 1926 and is currently the largest university in Greece by number of students, which number at more than 80,000 in 2010, and is a member of the Utrecht Network. For the academic year 2009–2010, Aristotle University was ranked as one of the 150 best universities in the world for arts and humanities and among the 250 best universities in the world overall by the Times QS World University Rankings, making it one of the top 2% of best universities worldwide. Leiden ranks Aristotle University as one of the top 100 European universities, at number 97, and the best university in Greece. Since 2010, Thessaloniki is also home to the Open University of Thessaloniki, which is funded by Aristotle University, the University of Macedonia and the municipality of Thessaloniki. Additionally, a TEI (Technological Educational Institute), namely the Alexander Technological Educational Institute of Thessaloniki, is located in the western suburb of Sindos; home also to the industrial zone of the city. Numerous public and private vocational institutes () provide professional training to young students, while a large number of private colleges offer American and UK academic curriculum, via cooperation with foreign universities. In addition to Greek students, the city hence attracts many foreign students either via the Erasmus programme for public universities, or for a complete degree in public universities or in the city's private colleges. the city's total student population was estimated around 200,000. Transport Tram Tram was the main, oldest and most popular public urban mean of Thessalonians in the past. It was in operation from 1893 to 1957, when it was disestablished by the government of Konstantinos Karamanlis. The French Compagnie de Tramways et d' Éclairage Électrique de Salonique operated it from 1912 until 1940, when the company was purchased by the Hellenic State. The operating base and tram station was in the district of Dépôt. Before the economic crisis of 2009, there were various proposals for new tram lines. Bus Thessaloniki Urban Transport Organization (OASTH) operates buses as the only form of public transport in Thessaloniki. It was founded in 1957 and operates a fleet of 604 vehicles on 75 routes throughout the Thessaloniki metropolitan area. International and regional bus links are provided by KTEL at its Macedonia InterCity Bus Terminal, located to the west of the city centre. Metro The