1. What is 'home' for the kids in these boarding schools?

Their homes are the reservations where they used to live.

 

2. What was the impact of these boarding schools on the tribal traditions?

The fact that they get taken away from their Original home and put in these boarding schools results in tribal traditions not being passed on to these children. These children will not be able to pass it to their children., because of that the traditions slowly disappear.