They racially profiled themselves. You are sounding like those old Southern White Racists when they would say, "anyone can go to those Black schools if they want!"
It is the administrators of these schools that have now become so brazen as to not even try to hide their real political goals as they have been doing from the naive public. Sad, they are using the children for their political goals.
Most alarming is that OHA is funding schools, no matter on which side of sovereignty question they are on(either wanting to become an Indian Tribe or have a Complete Break with the U.S.) both roads lead to the same place. Therefore, OHA is funding the sovereignty movement.
BTW, propaganda metastasizes in children's brains. Racism towards "others", anger, a hyper sense of self, super egos, and violently acting out may not begin to show until mid to late teenage years. Regardless of the sovereignty activism training, racial school segregation, by it's very nature, will also produce these outcomes.