This Tender Land by William Kent Krueger
Look for this one coming out in September. A novel about orphans at a school for Native Americans and orphans in Minnesota under a crooked director and his wife who the kids call the black witch. Four children plan an escape that takes them in a canoe headed for St. Louis where an aunt lives. This is their story and the situations/adventures they find themselves in along the way. Very good, but I'm a sucker for any orphan story.