Book - Al Capone does my Shirts

[Joe]

We read this in language arts, and its a great book. Its about a family with a normal teenager nicknamed Moose, a rather "different", older sister named Natalie, their parents, and their work to get Natalie into a school for children like her. They live on Alcatraz island (fix my spelling, someone), where Al Capone is currently imprisoned. The last chapter is a great surprise. 19/10+++.