 The issue of the training of trainers in the AIMFR Pedagogical System of Alternation 
The professionalization of teachers as a factor that contributes to the quality of education responds, in part, to the training that they have received. In the pedagogical system of alternation, due to the diversity of elements and actors involved, the teachers have a series of difficulties related to the practice of their functions that affect their quality. In this article, through the results obtained from semi-directed interviews, a study is presented that analyzes the point of view of experts in the field of training for trainers of alternation centers