The IVQ survey focuses (at national or regional level) on representative samples of the general French population, and among other goals tries to identify the proportion of people with low literacy levels among the overall population.
In the paper “IVQ: more than a national survey”, Jean-Pierre Jeantheau (Agence Nationale de Lutte contre l’Illettrisme (ANLCI), concentrates in detail on the IVQ survey programme, whilst making references to other literacy and basic skills surveys conducted in France.
Download the paper (pdf)