Right now I'm reading for a third time Herbert's "Dune" and I must say... if you did not have a chance to do it till now, you should. It's a very interesting position and imho I would put it as a "must read" in high school. Herbert created a very interesting world, full of great descriptions, fascinating ideas and well deep insight into both human nature and more. 
It touches on many philosophical ideas, human existence and which I find more and more important,  it encourages to look more into oneself. Lately, when I look and our social-networked society I see (with sadness) that young people too often right now look about others, thinking that someone is better or worst then them but this book... It shows just how much we must better ourselves without thinking about how others do. 
Of course, I do not say we should be egocentrists, no... we just should not compare ourselves to others.

As I said, there are many more things to get from this book so yeah, if you did not read it yet, try to do it this year! :)