 Le Bras was a lecturer at his alma mater, the École Polytechnique, from 1974 to 1992 and Sciences Po from 1979 to 1990.He was also Professor of Geometry, Representation and Morphology at the École Nationale Supérieure d'Architecture de Paris-Belleville from 1969 to 1990.He was a Visiting Professor at the University of Geneva in Switzerland as well as the University of Michigan and the University of Virginia in the United States.