The Perks of Being a Wallflower by Stephen ChboskyThirteen Reasons Why by Jay AsherSpeak by Laurie Halse AndersonGo Ask Alice by Beatrice SparksImpulse by Ellen Hopkins
Best Teen Books About Real Problems
2,996 books — 12,448 voters
The Absolutely True Diary of a Part-Time Indian by Sherman AlexieGo Ask Alice by Beatrice SparksThe Curious Incident of the Dog in the Night-Time by Mark HaddonBecause of Winn-Dixie by Kate DiCamilloCoraline by Neil Gaiman
Best Young Adult Books
13,179 books — 80,266 voters

The Great Gatsby by F. Scott FitzgeraldTo Kill a Mockingbird by Harper LeeAnimal Farm by George OrwellWatership Down by Richard  Adams
Best Books of the 20th Century
7,889 books — 49,792 voters

The Perks of Being a Wallflower by Stephen ChboskyThe Giving Tree by Shel SilversteinAnimal Farm by George OrwellIn Cold Blood by Truman CapoteTo Kill a Mockingbird by Harper Lee
Best Books Ever
77,184 books — 287,892 voters