My nephew is 5 and I had to unexpectedly pick him up from school one day and had River with me so I took him with me instead of getting leaving River in the car and I was absolutely gobsmacked at not only how many kids didn't know how to approach a dog - there were ones yelling and running towards him with arms going everywhere (needless to say I kept them well away) and ones that would come and try to pat him without asking (I absolutely hate that!!)
But the worst part was the amount of parents there that would grab their kids and lead them in a 20 metre arc around us so their kids didn't get too close - and I was holding him (so he didn't get trampled by kids). The worst part are these are the kids who when you are out with your dogs are the ones that will sprint away from the dogs shrieking their heads off
If schools don't teach them how to act appropriately around dogs no one will - because it's quite obvious that the parents don't know enough to teach them either - instead they just pass down their own fears