well my kids (little hellions) ride scooters to school about 50% of the time (so when it isn't raining), they're 5 and 3. No way would they be on the road, that really isn't safe. the pavement is wide, and if there was a cycle lane they'd be in that but there isn't.
They know to stop and wait for me at roads, to stop if there's someone in front of them, to stop and wait at specific points on our route (frequent) and to NEVER go whizzing off too far that they can't hear me telling them to stop.
I toddle along behind (or occasionally in front, yelling to "hurry up!") with the baby in the pram. They are never very far from me, so are supervised.
If they were to cause an accident I'd make very sure they apologised.
Oh and they're very disability aware as when I don't have the pram I have to use sticks too.
if they don't follow those rules, they don't get to scoot the next day.
Have I satisfied all of the PPs requirements? No, because they are still on scooters. Can't win.
the old man on a bicycle who ran into my pram because HE was on the pavement and not looking, he's a liability! (and no, I wasn't too busy watching kids on scooters, the scooters were folded and in the basket under the pram as I was on my way home)