Is it necessary to make classes of levels to make the pupils progress?

On the occasion of IREDU’s 50th anniversary, Marie Duru-Bellat comes back for an interview on the article “The constitution of level classes in secondary schools; the negative  effects of a practice aimed at levelling out”, which she co-authored with Alain Mingat in 1997 and which was published in the Revue française de sociologie, vol. 38, n°4, 1997. This article is one of the publications that have marked the history of IREDU …

The interview can be found here :

https://iredu.u-bourgogne.fr/historique/faut-il-faire-des-classes-de-niveaux-pour-faire-progresser-les-eleves.html