Students need to change rooms or room partners every year in abroad hostels is totally depends on Hostel rules. Firstly, I am clear that most of the universities don’t provide hostels themselves. They have contractors who take care of that. So it depends on what are the rules and regulations there.
Some medical schools do require students to change room partners every year, while others allow students to stay with the same room partner for multiple years. If you are considering applying to an MBBS program, it is important to research the Hostel room’s policy assignments so that you can make an informed decision.