Where do I start?
Parents of my y3/4 class routinely carry their children's bags in, take their lunch bags to the hall, hand in letters and money, put their reading diaries and spelling books in the right places on the right days, linger in the corridor chatting ... for goodness sake MAKE YOUR CHILD LOOK AFTER THEIR STUFF!
7-9 year olds can carry bags and remember books. Don't baby them. Even 3 year olds can carry their bags - don't be that parent who mollycoddles their children.