A Separate Peace is the first book that John Knowles wrote about Devon School, followed up by Peace Breaks Out about 20 years later. His other novels include A Stolen Past, A Vein of Riches, Spreading Fires, Indian Summer, and others.
Consider other books about World War II, such as The Caine Mutiny, or, to contrast, books that examine women's and girls' experience during World War II, such as The Diary of Anne Frank or The Book Thief.
A Separate Peace also invites comparison to other prep school stories, such as Dead Poets Society, set at a prep school in 1959, the same year A Separate Peace was published.