1. Hunger Games series (2008-2010)
Obviously this series deserves to be a classic. In the future I hope it's taught in schools the way 1984 or Fahrenheit 451 are, and I'm sure I'm not the only one.
2. Before I Fall (2010)
This is without a doubt one of the most powerful books I've read and though in 30 years it'll definitely be dated, I think the story and characters and themes are strong enough to warrant it being read in the future. (And after all, even our most "timeless" classics have aged and become dated by now.)
3. Stupid Fast (2011)
YA is still such a new genre that I don't know what sorts of books will be the type to become "YA classics," but I hope it's books like Stupid Fast -- with strong characters, a great voice, and an honest viewpoint. This is one of the best "boy books" I've read in so, so long and I hope it sticks around.
4. The Mockingbirds (2010)
It's rare for a book to come where I think, okay, teenagers NEED to read this, but The Mockingbirds hits that mark. Not only does it tackle complex, important subjects while paying homage to everyone's favorite American classic (To Kill A Mockingbird), but it does so in such a straightforward manner. It totally deserves to stick around.
5. The List (2012)
Like with The Mockingbirds, I immediately thought that this is a book that needs to be read. It's powerful and hard-hitting without being didactic or pushy.