Abstract
This article aims at questioning in a historical perspective the way the French State has organized and adapted teacher training from the early 1990’s until today. It attempts to highlight the ambitions underlying the successive reforms and the way in which a new single occupation of “teacher trainer” came into existence and evolved. Having acquired a set of specific skills and a common culture, the various actors of teacher training, with different origins, educational backgrounds and competences, were carried into a common process of professionalization until the middle of the 2000’s.This new profession was building at least partly on a series of breaks with the traditional features of the teaching profession. The new institutional framework of teacher training organized in academic master programmes might bring this construction process to an end. Therefore, it is necessary to assess the impact of this reform on trainers.