Some do, some don't. ? Of course. The US has a great many public schools, all of them available to the public. Even, in areas with significant Ojibwe populations, schools like this one .
The US has a lot of problems with its school systems, of course - Red tribe children get, on average, significantly poorer educations than White children, for a variety of reasons all of them indicting.
Not only education:
Native Americans rank at the bottom of nearly every social statistic: highest teen suicide rate of all minorities at 18.5 per 100,000, highest rate of teen pregnancy, highest high school drop out rate at 54%, lowest per capita income, and unemployment rates between 50% to 90%.
Why do you suppose that is?
Except for the Amish, Mennonites, Quakers, Mormons, and the like.
Or the Jews, in the US.
All immigrant communities, self sufficient and with cultural and religious taboos against assimilatio [which apparently do not work as well when the opportunities for assimilation are greater than the barriers to them]
But in the case of the former cultural groups of the Great Plains, their "cleansing" by the Mandan, Cheyenne, Blackfoot, Dakota, and other horse-adopting ("westernized"?) groups was so thorough only paleontological traces remain. Perhaps similarly among other vanished Red peoples of North America, whose cities and fields are sites of archaeology rather than anthropology, but more likely the flu.
The major holocausts of the Red people of North America north of the Rio Grande were apparently by disease. There were many comparatively small genocides, by human agency, but nothing on the scale of the Holocaust of the Jews in WWII - and nothing if that kind, of an intermixed population of a given culture intentionally massacred by their cultural fellows.
Has there ever been a case [besides the Nazis, apparently], when the perpetrators kept accurate body counts? Where do the Pequot Indians who were burned alive come in? And the Iroqouis villages burned down?
Where does SAM come up with the idea that the Native Americans are held on Reservation?
The only time I ever realise that I am crossing onto or leaving a Reservation is when I see the little road sign that says I am entering or leaving a Reservation, It is the same for the Native Americans, no guard post, no papers, no road blocks, nothing, not even a speed bump, yes SAM come to visit the real America, not your demented delusion.
?? But you're perfectly okay with apartheid and segregation, so there is no problem even if there were walls and blockades and the native Americans were oppressed into extinction anyway