Winger by Andrew Smith. Younger than his classmates at a boarding school, Ryan Dean West grapples with living in the dorm for troublemakers, falling for his friend who thinks of him as just a kid, and playing wing on the Varsity rugby team.
Seventeen-year-old Greg has managed to become part of every social group at his Pittsburgh high school without having any friends, but his life changes when his mother forces him to befriend Rachel, a girl he once knew in Hebrew school who has leukemia.
Julie becomes the "Good Guide" to two Mongolian brothers who arrive at her school. They're oddly dressed in huge woolly coats and Chengis is very protective of his younger brother Nergui. The Unforgotten Coat by Frank Cottrell Boyce