The Sisters of the Christian Doctrine of Nancy (French: Sœurs de la Doctrine Chrétienne de Nancy) (D.C.) is a religious order of the Roman Catholic Church for women, whose primary mission is the teaching and nursing of the poor. Its members place after their names the order’s initials, D.C. They are known as the “Vatelottines” in honor of their founder, and also “School Sisters”, especially in Germany and Luxembourg, because of their primary mission.