The making of changes inside prisons necessarily implies education. In Thailand, the point is not only to organise professional training courses but also to make detainees aware of the fact that they belong to a community of values. Non-formal education allows the necessary flexibility to an individual approach of training that must take into account the particular needs of learners. The involvement of all the staff working in prison, as well as the training of the teaching staff, are the essential lines of policies currently developed in Thai prisons. [Abstract translated by Magdalena Padron; article translated by Wilaipan Somtragool.]