There are a ton of great books for ninth grade readers; here are a few from the last several years that really stand out.

Fiction

Dodger by Terry Pratchett

Killer of enemies by Joseph Bruchac

A brief history of Montmaray by Michelle Cooper

The fault in our stars by John Green

Reality Boy by a novel by A.S. King

Nonfiction

Popular a memoir: Vintage wisdom for a modern geek by Maya Van Wagenen

Hole in my life by Jack Gantos

The Nazi hunters: how a team of spies and survivors captured the world's most notorious Nazi by Neal Bascomb

Graphic Novels

Friends with boys by Faith Erin Hicks

American born Chinese by Gene Luen Yang ; color by Lark Pien

Dogs of war by Sheila Keenan ; illustrated by Nathan Fox ; colors by Rico Renzi and Guy Major