I've answered similar questions before and written articles that paint the reality of boarding schools (known as "residential schools" in Canada). The actions and results were much the same for both the United States and Canada.

• What was the motivation behind American Indian boarding schools?

• I am in a class with a student who is adamant that the US Government is not responsible for the death of Native Americans, and has claimed there was no genocide- just unintentionally introduced germs. How correct is he?

• Monday Methods | "...The main purpose of educating them is to enable them to read, write, and speak the English language" - On the Study of Assimilation