Choose Your Dorms: Residential Rental vs University Housing

Mine is a bit complicated.
I created a prep-school dorm that I use for my high-school students to rotate through, but it is also a rotation point for them to go on to Uni as well. It's really a residential lot that is located in Copperdale.


I have six students that attend high school until they meet the requirements I set for their Uni majors.
I send them to Uni in groups of three, for two terms, and then I send them back to the prep dorm and rotate in the next three for two terms. Usually alternating between Britechester and Foxbury.


So where do Rental Units come in?
I am considering having my sims lighten up on course loads and going to Uni for three years instead of two.
First year: On Campus dorm
Second Year: Off Campus dorm
Third Year: On Campus apartment.

You see, the problem I have with Uni, over all the terms, is a lot of their dormie friends, sims that I've completely made over, tend to leave the dorm between terms and are hardly ever seen again. I have to group them in clubs and make the hang out at the student commons just to see them, or invite the club to the dorm.

If their final year is in this soon-to-be apartment building, I can assign all my favorite dormies to the other rooms.
And I can also have a change of pace from the usual dorm game play for their final year.