Below is a list of novels or series of novels that are popular among junior high students. Also, "The Giver" is a pretty good novel to read, and is required reading in many American English classes.
The Hunger Games
The Chronicles of Narnia
A Series of Unfortunate Events
If you do read Harry Potter or the Chronicles of Narnia, remember that the authors are British, so not all of the phrases in those books are common in American English.