Book 2 of the Shadow Children series
by Margaret Peterson Haddix (5th+)
Luke has been taken from his home and has been given the fake I.D. of another young man who was killed in a skiing accident. Now Luke finds himself headed to the Hendricks School for Boys under the name of Lee Grant. It is not a place that he likes. No one seems to care about anyone else unless they are bullying or being cruel to that person. Then Luke finds a door to the outside and his stay changes as well as the people he knows within the school. But who can he trust? Are his friends really his friends? Read Among the Imposters, book 2 of the Shadow Children series, to find out.