This book is probably my Catcher in the Rye (I didn't read Catcher in the Rye until I was an adult and I didn't like it).
I read this the day after I received it in class junior year of high school. I only remembered the ending and the scene where Phineas breaks the school swimming record. Somehow those two events became my whole memory of this book.
Rereading it ten years later, it was difficult for me to remember what drew me in when I was 17. The story is solid if definitely dated. There are several slurs thrown around and the term holocaust is used with shocking casualness.
I don't think I'll ever feel the same way about this book that I did when I was 17. Maybe I was sixteen when I read it. There's a good passage about being sixteen in the book. But I'll probably keep it around for the nostalgia factor.