§1. At the time of pastoral visitation and also in the case of necessity, the diocesan bishop, either personally or through another, can visit churches and oratories which the Christian faithful habitually attend, schools, and other works of religion or charity, whether spiritual or temporal, entrusted to religious, but not schools which are open exclusively to the institute’s own students.
§2. If by chance he has discovered abuses and the religious superior has been warned in vain, he himself can make provision on his own authority. Art. 1.
Source: Code of Canon Law (Vatican.va)