The relationship between the Church and the State are most often considered as partnership relationships between two types of entities with highly contrasted characteristics due to their mode of administration. These relationships do exists, because the Church brings its contribution to public service in favour of local communities. This article which is based on the case study of the "Canossians Sisters" aims at showing that the Church, through its activities in the village of Datcha, contributes to the improvement of the social and economic living conditions of local communities. Through a field study and a documentary research, this study shows that the mission of the Sisters constitutes a response to the process of secularization of local communities.