The Paris region hosts France's highest concentration of the ''grandes écoles'' – 55 specialised centres of higher-education outside or inside the public university structure. The prestigious public universities are usually considered ''grands établissements''. Most of the ''grandes écoles'' were relocated to the suburbs of Paris in the 1960s and 1970s, in new campuses much larger than the old campuses within the crowded City of Paris, though the École Normale Supérieure, PSL University has remained on rue d'Ulm in the 5th arrondissement. There are a high number of engineering schools, led by the PSL University (which comprises several colleges such as École des Mines, École nationale supérieure de chimie, École Pratique des Hautes Études and Paris-Dauphine), the Paris-Saclay University (which comprises several colleges such as AgroParisTech, CentraleSupélec and ENS Paris-Saclay) the Polytechnic Institute of Paris (which comprises several colleges such as École Polytechnique, Télécom Paris and École nationale de la statistique et de l'administration économique) and also independent colleges such as École des Ponts et Chaussées or Arts et Métiers. There are also many business schools, including HEC, INSEAD, ESSEC, and ESCP Europe. While ENA, the school training higher-level civil servants, has been relocated from Paris to Strasbourg, three of the most prestigious social sciences universities, Sciences Po (7th arrondissement), École des hautes études en sciences sociales (6th arrondissement), and Paris-Dauphine (16th arrondissement) are still located in Paris. The Parisian school of journalism CELSA department of Sorbonne University is located in Neuilly-sur-Seine. Paris is also home to several of France's most famous high-schools such as Lycée Louis-le-Grand, Lycée Henri-IV, Lycée Janson de Sailly and Lycée Condorcet. The National Institute of Sport and Physical Education, located in the 12th arrondissement, is both a physical education institute and high-level training centre for elite athletes.