Thirteen Reasons Why by Jay Asher

I was reading this book and was carrying it around while I was substitute teaching in a high school class today.  Several of the girls saw the book and recognized it and told me that they thought it was a great book. I agree. 
At the beginning of the book, Clay, a high school student receives a package in the mail.  It contains audio tapes.  He finds a tape recorder and begins to listen.  The tapes are of a classmate who recently committed suicide.  She says that if he is listening to the tape, then he is one of the reasons why she is dead.  He spends the night following her map through the town listening to her tapes that explain why she committed suicide.  Through her eyes we see how each little incident added up to big problems in her mind.  It is intended to make people think about how they treat one another, which is something that high school students need to think about. 
I like the dual narration style of the book and found it to be very suspenseful.  As I read it, I felt like I was Clay, looking around to see if other people realized what I was reading.  I had to stop reading and take breaks from the book a few times because it is just so sad. 
I am glad that some of the high school girls told me how much they enjoyed the book.  I think that it is something they can relate to.  I hope it makes high school students think.