Tertiary education in Italy is divided between public universities, private universities and the prestigious and selective superior graduate schools, such as the Scuola Normale Superiore di Pisa. 33 Italian universities were ranked among the world's top 500 in 2019, the third-largest number in Europe after the United Kingdom and Germany. Bologna University, founded in 1088, is the oldest university in continuous operation, as well as one of the leading academic institutions in Italy and Europe. The Bocconi University, Università Cattolica del Sacro Cuore, LUISS, Polytechnic University of Turin, Polytechnic University of Milan, Sapienza University of Rome, and University of Milan are also ranked among the best in the world.