Parenting Big Kids (5-8) Support Group
This community is focused on the joys, challenges and concerns faced by parents of big kids (5 to 8 year olds). The major areas of child development include: physical development, perception and sensory development, communication and language development, cognitive development, emotional development and social development. Join to share your stories and get advice.

I think you need to sit your daughter down and have a very serious talk with her about how she treats the dog. Explain to her that the dog is a living, breathing thing and that he can get hurt. Ask her how she'd feel if her rough play caused an injury.
As the dog gets older, if your daughter continues to be so rough with him, he may start to get aggressive and could bite her or someone else. Ask her how she'd feel if you had to find a new home for your dog or have him put down because he bit someone.
Lastly, I don't think she should be allowed to take the dog to school or anywhere else until she can prove that she can treat him properly. Your daughter might be very upset with you for that, but maybe that will be an incentive for her to change her behavior.
I hope you can get through to your daughter. Good luck!