Perhaps I was too young when I read this (high school), but I didn't really care for it. It takes place in New Hampshire though, so it's got that going for it.
Set at a boys' boarding school in New England during the early years of World War II, A Separate Peace is a harrowing and luminous parable of the dark side of adolescence. Gene is a lonely, introverted intellectual. Phineas is a handsome, taunting, daredevil athlete. What happens between the two friends one summer, like the war itself, banishes the innocence of these boys and their world.
A bestseller for more than thirty years, A Separate Peace is John Knowles's crowning achievement and an undisputed American classic.