What is the minimum age for entry in the IVE?

Canon Law (643 §1) requires that a person be 17 in order to enter the novitiate for a religious congregation. So technically no one can enter the IVE until that age. However, we do have a minor seminary (grades 7-12) for boys who feel called to the priesthood. Obviously, entry into the minor seminary requires the permission of your parents, and there is no obligation or vow of any kind (you can leave at any time if you discern you vocation lies elsewhere), but we still consider our minor seminarians very much a part of our religious family!