I wouldn't recommend this for any age group.
Awful book. Besides being unoriginal and boring, starting on page 50, there is a blatant message encouraging children to lie to their parents, saying that its okay if you think your parents wont approve of what you are doing or where you are going. I read every book before my son does, and this one and any of the other ones written by this particular author is being banned in our household. I'm not an overly strict parent, but any author who sits there and has the audacity to expose my child to poor language, dishonest actions, and lifestyle choices that are contrary to our beliefs is not welcome in my house.