The question is to know the reason why we should use the method of postponed interview for the evaluation of an experience about artistic education included in history class. Doing so can be particularly profitable when it comes to analysing the changing in students. It also allows to enter the process itself. Postpond interviews make it possible to perceive the complicated relations and interactions among the fabrication of the mental images involved. Thus, the dynamic interations between methods, growing abilities and mental images became apparent. Such interviews point out that a cultural initiation is possible in history. This initiation involves an evolution of the mental image of that discipline and the acquisition of a historical knowledge.