Kids should read these:
Series:
Fablehaven, Brandon Mull
Beyonders, Brandon Mull
Five Kingdoms, Brandon Mull
Janitors, Tyler Whitesides
Dragon Slippers, Jessica Day George
Princess series, Jessica Day George
Books of Bayern, Shannon Hale
Princess Academy, Shannon Hale
Nancy Drew, Carolyn Keene
Land of Stories, Chris Colfer
The Secrets of the Immortal Nicholas Flamel, Michael Scott
The Dark is Rising, Susan Cooper
The Prydain Chronicles, Lloyd Alexander
The Chronicles of Narnia, C.S. Lewis
The War That Saved My Life, Kimberly Brubaker Bradley
Potion Masters, Frank L. Cole
Stand Alone:
Wonder, RJ Palacio
A Monster Like Me, Wendy Swore
