Yes! I would love if we had boarding school again, especially if the Gurus could implement it in a way kind of like the jobs in Get to Work. Like, your child/teenager sim would be "greyed out" on the thumbnail-bar-thing but you could switch to control them at school or switch back to the sims at home. They could also have nifty uniforms like the private school students in the Sims 2, or not, if there were different campuses to choose from with different rules, features, or drawbacks.
And in the same vein, the Gurus could use the same system for a University pack. As a college student, I'm doing my prereq credits at the community college down the street before transferring to a state uni, and it's more cost effective to just stay at home until I transfer (as I don't have to pay $5k to share a room with 8 people or half that just to eat). It would be interesting, while unlikely, to see something like this in the Sims; where a student stays at home and pays a cheaper tuition, then goes to class when it's time instead of moving to a dorm right off the bat. Then they could transfer to a bigger school and have the whole "college experience". Idk, just a (rambley) idea ¯\_(ツ)_/¯