Some university dormitories are allocated by schools, and some are chosen by themselves, mainly depending on the arrangement of each school. Because the hardware facilities of each dormitory are different, the accommodation conditions are different. Some dorms will be better and some will be worse. Generally speaking, university dormitories should be kept until graduation.
In most cases, the university dormitory will stay until graduation. Roommates are very important in the four years of college life. They are your classmates who have stayed the longest in four years and should know you best. Generally speaking, what kind of roommate can be with is fate. The school's allocation of dormitories must be done faster and more efficiently.
Sometimes they don't think so much. First of all, they will distinguish between sexes, and then arrange according to the enrollment order, according to the student number and according to each student's major. That's easy. They will arrange students directly according to the number of students. Generally speaking, a dormitory is a class. However, some of them are not lucky enough.
It will be inconvenient if their roommates are not in the same class. This way will be quick, but it will also bring some problems, such as various dormitory disputes.