Total Number of Middle School Books: 3,169
The 39-Story Treehouse
The 52-Story Treehouse
The 57 Bus
The Absolutely True Diary of a Part-Time Indian
The Abused Werewolf Rescue Group (Paranormal Support Groups #2)
The Adventures of Captain Underpants (Captain Underpants #1)
The Adventures of Hercules
The Adventures of John Blake: Mystery of the Ghost Ship
The Adventures of Super Diaper Baby
The Amazing Planet Earth
The Amazing World of Gumball
The Amazing World of Gumball #2
The Amazing World of Gumball Vol. 2: Cheat Code
The Attack of the Plants: A Branches Book (the Magic School Bus Rides Again)
The Awakening (The Vampire Diaries #1)
The Axe of Sundering (Adventurers Wanted #5)
The Baby-Sitters Club #1: Kristy's Great Idea
The Baby-Sitters Club Graphix #4: Claudia and Mean Janine