When shopping for your children's Back to School clothes, keep in mind it is still SUMMER when school starts, and very hot. Fall clothes won’t work well for the first several weeks or even a few months.
For kids AND adult shopping:
When a clothing line first come out, they are generally for the season coming up, and not the season that would currently work. It makes NO SENSE to pay full price for something that you can't even wear! Waiting until it is closer to or even the correct season will make the same items much cheaper, and you can wear them right away if you want.
The only exception to this rule, would be when you are purchasing clothes that are PAST their season. These items would be on clearance, and it would be worth it to purchase clearance items and save them until the correct season.