HEI Lille or École des Hautes Études d’Ingénieur (French for School of High Studies in Engineering) is a private school of engineering located in Lille, France, member of Lille Catholic University and a French Grande École. The school trains students during five years and delivers the diploma of Ingénieur (equivalent of a master's degree). The diploma is approved both by the State and the CTI.HEI is a member of the Conference des Grandes Ecoles (CGE) guaranteeing the teaching and selectivity in admissions. In 2019, the school is ranked n°3 by Eduniversal among post baccalaureate training programs of general engineering in France.