Insurgent is a great book and follow up to Divergent. Again if you saw the movie, don't judge this book by it. In this reviewer's opinion this book was 100 times better than the movie and actually makes you want to read book 3. I give this book 4 stars as it's one of the best and great for your high school student. This is a great book for either boys or girls.
You can buy a used hardcover edition of this book from Thrice Read Books here.
You can also buy this book at Amazon in Kindle, hardcover, paperback, audiobook and audio CD editions here. [affiliate link]