71 The first natural and necessary element in this environment, as regards education, is the family, and this precisely because so ordained by the Creator Himself. Accordingly that education, as a rule, will be more effective and lasting which is received in a well-ordered and well-disciplined Christian family; and more efficacious in proportion to the clear and constant good example set, first by the parents, and then by the other members of the household.
Source: Divini Illius Magistri (Vatican.va)