Talk to your children. Ask if it is okay for you to wear your kilt when you drop off/pick up your children. It seems that your children are secure enough in themselves and you to help you pick out your kilts. Then again, kids can be cruel. Ask yourself if you want your kids to go through the teasing or not. Are they strong enough to handle the jibes and jokes?
I wear my kilt when I pick my son up from school, and he doesn't have any problems. His friends and classmates just say, "Whoa! That's cool!" But, then again, my son is 11. I hope this helps!
Good luck with this!
Regards,
Matt