I was placed in a Presbyterian boarding school in Ganado AZ 1n 1955 (6th grade) I look primarily Anglo, but that didn't mean I got any better treatment. 

The school decided to have a Navajo Christmas Nativity/play. I was devastated to hear some of my Navajo classmates react with disgust "I'm not going to dress up like a "john" (Similar to Ni**er for a black person) How could some of them turn their back on their heritage, their history and their people??

The Presbyterian teachers at that school were better than most at trying to give us the ability to exist in both worlds. Very little of the "rejection attitude" came from there.

Sixty years later, it is gratifying to note that almost all students from that school became the "Movers & Shakers" in Tribal Gov't and leaders in their communities and professions.

Yes, the abuse in most of the (particularly gov't) "Indian" schools was terrible, and unforgivable - but like many bad situations, there were a few silver linings.