This is a good book. Starts a little slow, but it picks up and then you don't want to put it down.
Jodi Picoult is able to take you to a school shooting scene and then is able to make you understand what drives some teenagers over the edge. Anyone who has attended school can relate to the popular groups, the nerds, the misfits, etc.........
If you have children/grandchildren/cousins/nieces/nephews/neighborhood children/etc., I urge you to read this book.