High School Kick

I'm in this kick right now where I want to read and re-read suggested high school books. So far I've recently read Of Mice and Men, The Great Gatsby, and Catcher in the Rye. I feel these books are suggested for good reasons and in high school I either skimmed through the books or never really appreciated them, so I'm giving them a second chance. Next I would like to read Lord of the Flies and To Kill a Mockingbird. Anyone have some good suggestions I could add to my list before I'm over this kick?