I think it depends on if they meet the application deadline each year. Once you are in housing - It appears to be pretty easy to stay in housing. But I have heard over and over to make sure your student meets the deadline for the following year’s housing.
@BlueBayouAZ, I agree. The NMF’s have first pick for housing, so as long as they actually do the process for housing, they will get housing. Some NMF may commute and pocket the stipend so the school does not automatically assign housing for them.