Nathalie Bulle is Researcher in the French National Center of Scientific Research (CNRS) with the Methods of Sociological Analysis Research Group (GEMAS), Paris. She is the author of La rationalite des decisions scolaires (1999), Ecole et Societe - Les paradoxes de la democratic (2001, ed. with R. Boudon et M. Cherkaoui) and L'ecole et son double. Essai sur l'evolution pedagogique en France (to be published).