ENSAE Paris is known as the specialization school of École polytechnique for economics, finance, applied mathematics, statistics, and data science.

Finally, the decree of 15 April 1971 clarified the administrative status and the objective of the school in the academic field, designating the ENSAE a Grande Ecole.

The "administrateurs" training stayed at the ENSAE where increasing numbers of students chose to specialize in financial modeling and other new areas of applied statistics such as biostatistics or quantitative marketing.

In 2006, Prime Minister Dominique de Villepin officially announced the moving of the school to the new ParisTech Campus in Palaiseau, near the École polytechnique, in 2010.

Included in the National Institute of Statistics and Economic Studies (INSEE) under the tutelage of Ministry of the Economy, Industry and Employment, ENSAE provides training for statisticians-economists, some of which are civil servants belonging to the Corps des Administrateurs de l'INSEE, a category of top level public managers in the French administration.

Economists and statisticians trained are intended to contribute to the economic research; former students hold positions within international organizations (UN, IMF, World Bank, European Commission,...) and French administration or other public institutions (Ministry of Economy, INSEE, CREST,...).

A large and growing number of students chose to do such dual degree program in order to get an additional Master of Science, MBA or PhD degree from renowned institutions in the area of economics, finance, statistics, and applied Mathematics where its curriculum is one of the best, such as Harvard, Stanford, Princeton, Columbia, NYU, Chicago, Cornell, Cambridge, Oxford, Imperial College, LSE, Humboldt University of Berlin, Mannheim, Universitat Pompeu Fabra, etc.