1. The Harry Potter Series by J.K. Rowling
2. The Secret History by Donna Tartt
3. Mind of Winter by Laura Kasischke
The Founding Fields.
4. The Lake of Dead Languages by Carol Goodman
5. A Great and Terrible Beauty (Gemma Doyle Trilogy #1) by Libba Bray
This is one of my favorite YA series. It's set in Victorian England at a private school where some pretty strange things happen. The world building in this is so unique and Libba Bray's description makes you feel like you're there the whole time. I really enjoyed the characters and the story, and have read this a million times. It's always on my list for recommendations.
6. Lord of the Flies by William Golding
7. The Awakening by Kate Chopin
8. The Winter People by Jennifer McMahon
9. In the Forests of the Night (Den of Shadows #1) by Amelia Atwater-Rhodes
10. The Magicians (The Magicians #1) by Lev Grossman