Abstract
Like other southern countries, the sous-prefecture of Lamé in Chad is not an exception in terms of school desertion. However, this situation is the outcome of various heterogeneous difficulties. Processes by which it is carried out are numerous and favored by several interconnected factors of which the main link is poverty. Closely linked to parent statuses, some differencies are noticed under socio-demographic conditions. Household forms are the distinctive features of differing types of the abandon in terms of the figures. The explaining reasons of these distinctions are the result of socio-ethno-religious marks. School left-outs are not observed in the same way as in the multiple, monogamous, muslim, and christian families.