This is an old post, but I thought I may be able to help for the benefit of others who are looking. I do formation ministry for my community.
If a man joins a diocese, that bishop has a seminary to which he sends his seminarians. The seminarian does not have a choice. If you don’t like the seminary used by your bishop you have to find another diocese. However, this is not as easy as it sounds. No bishop may accept a candidate from outside of his diocese without the permission of the bishop where the candidate resides. Both bishops will want to know why someone wants to enter a diocese outside of his home. The whole idea of diocesan seminaries is that they respond to the vocations of the local Church. Dioceses are not allowed to compete with each other for vocations. I should add here that if you opt out of joining your diocese to join another and later you decide that you want to be closer to your family and want to return to your home diocese, the bishop may deny you incardination. It’s not the same as joining a religious order and deciding that you do not have a vocation to be a religious and would prefer to be a secular man. Most bishops have no problems admiting former religious, but they do have a problem admitting someone who shunned his home diocese for another diocese.
If a man enters a religious community, he does not attend the seminary. We send our religious to theology houses, universities or colleges of theology of our choosing. The individual religious has no opinion on the matter. He is bound by obedience to attend classes where the religious superior chooses for him. This is always going to be near the house of formation, because it’s practical and cost effective. If the diocesan seminary is available and there is room, we do send religious to classes there, but they live at the house of formation, not at the seminary.
If you joine a society, priestly fraternity, secular institute, secular order, clerical institute or clerks regular, you attend a seminary or college of theology where the institute has a contract. They usually have contracts to keep costs down.
I hope this information is helpful to someone.
Fraternally,
Br. JR, OSF
