Both of my children have read this book in the 5gh grade. My son first and he loved the story and later watched the film. He has cleared his shelves of many books he has read over the years but kept this one and when my daughter had a book report to do this year, he lent it to her. She loved the book and read through it in a couple of sittings. Like my son, she was eager then to see the film. I have seen others' post concerns about the violence, the language use to describe Kevin and Max ("cripple"), etc. By 10, most children have already encountered an awareness that the world is not perfect for everyone in it. Some kids come from places that we can't understand and which impact how they are in the world. This book did a lot to inspire my kids to consider a little about the world that others around them inhabit and to remember kindnesses and cruelties that we can all participate in. Themes of friendship and overcoming feelings of isolation and poor self-image were much more prominent elements that were taken away than fears of killers, abuse, and un-p.c. language. As Loretta says, "Doing nothing's a drag, kid." Do something...sit down and enjoy Max's retelling of his adventures as a Knight of round table.
You might follow this up with another novel: Wonder (but that's another review!)