HEI Lille or École des Hautes Études d’Ingénieur 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 excellence in teaching and selectivity in admissions.