North Dakota has open enrollment, so there are a lot of buses from other schools on the rez each morning (which I find good for the students). The tribes runs the local school not the BIE, and I think that is much more common these days. We don't have any of the old BIA schools, and the most common boarding school in our area is a world of difference from the old government crap (it is now run by Native Americans and does wonders for troubled children).