Even though this movie does have some redeeming value, I believe it is not appropriate for ages 13-15. It should have been rated R. I do not like the fact that my 13 year old daughter could go buy a ticket and see this "fight-club" movie. This movie contains girls fighting girls, girls fighting boys and boys fighting boys- sometimes to the extreme of sending someone to the hospital or kids passing out. The fight scenes are long and drawn out and the kids watching definately cheer the action on. They all want to see blood. It's sick. Note: there is a scene w/ 2 girls in a hot tub making out with each other. Also, numerous gratuitous shots of girls' breasts in a number of situations. Not a feel-good uplifting film! Definately one for the "boys".