My school had a lot of different levels of math in particular, I took a lot of the highest courses and loved my teachers, but with the stories I've heard from o

My school had a lot of different levels of math in particular, I took a lot of the highest courses and loved my teachers, but with the stories I've heard from other students it seems like the school would give the best teachers to the best students, so people already doing bad would only do worse. So I do see some value in removing that because it incentivizes the school to not care about the lower level courses as much. I think a better overall solution would be something like what Khan academy was going for - you can have a bunch of kids at different levels in the same class, and then you can also rely on them to help teach each other more. I think this was the main way schoolhouses were run before the industrial revolution. Then you're not limiting anyone, and you're also not encouraging the weird social effects that come from trying to section off people into discrete buckets