Great question! It can become quite difficult to find quality reading materials for our teens, while preserving their purity, innocence and morality!
I highly recommend visiting (and if you are able, "purchasing") both Mother of Divine Grace and Seton Home Study's syllabus and book lists for ninth graders.
We have enjoyed MANY wonderful classics and living history books through these resources.
Whether or not you are Catholic, the book lists are so worthwhile; even if you do not use the lesson plans.
Here are some of our favorites:
The Scarlet Pimpernel by Baroness Orczy (one of my favorite books OF ALL TIME)
Rifles for Watie by Harold Keith
Tale of Two Cities, Merchant in Venice, A Christmas Carol..all by Charles Dickens
To Kill a Mockingbird by Harper Lee
Red Badge of Courage by Stephen Crane
Old Man and the Sea by Ernest Hemmingway
Light in the Forest by Conrad Richter (a few disturbing incidences in this book...each parent should discern if their child can handle these...it involves violence between Indians and the White Man)
Christopher Pauolini's Eragon Trilogy (very "Tolkien"-like)
A Lantern in Her Hand by Bess Streeter Aldrich
Muskets Along the Chickahominy by Gertrude Finney
Johnny Tremain by Esther Forbes
The Spy by James Fennimore Cooper
The Deerslayer by the same as above
Little Women by Louisa May Alcott
I look forward to seeing the suggestions of other visitors and I hope that you will find some ideas you like in what I have shared Christine!