Maybe transfer to a saner school.
I can kinda sorta see the school’s fear and it’s tied, I believe, to lawsuit happiness. Since it apparently happened in a housing unit kept by the school, the school is worrying about the possibility of getting sued by someone shot by an occupant of the unit. Now in a saner age such a suit would get laughed off. But our new fangled “deep pockets” require, not just allow, some sufficiently rich party who is a minor co-defendant to stand the whole cost of an inflated lawsuit. One of the earlier ways liberalism went off the rails.
This is a Catholic school in Spokane, Washington, If that stunt was pulled here, G-d knows what would happen at the average State School even in a pure red state, much less a liberal arts type college or University of any kind. Maybe Theological Seminaries are the sole legit option they have.