18 Adaptation and renewal depend greatly on the education of religious. Consequently neither non-clerical religious nor religious women should be assigned to apostolic works immediately after the novitiate. Rather, their religious and apostolic formation, joined with instruction in arts and science directed toward obtaining appropriate degrees, must be continued as needs require in houses established for those purposes. In order that the adaptation of religious life to the needs of our time may not be merely external and that those employed by rule in the active apostolate may be equal to their task, religious must be given suitable instruction, depending on their intellectual capacity and personal talent, in the currents and attitudes of sentiment and thought prevalent in social life today. This education must blend its elements together harmoniously so that an integrated life on the part of the religious concerned results. Religious should strive during the whole course of their lives to perfect the culture they have received in matters spiritual and in arts and sciences. Likewise, superiors must, as far as this is possible, obtain for them the opportunity, equipment and time to do this. Superiors are also obliged to see to it that directors, spiritual fathers, and professors are carefully chosen and thoroughly trained.
Source: Perfectae Caritatis (Vatican.va)