EllanVannin
I don't see why the spreaders ( schoolchildren ) have to wear masks as they'll spread it off their clothes anyway.
It's mainly the 60's onwards who should wear masks outside their homes, shops/buses/trains.
I don't understand your thinking. The virus is spread mainly from droplets from the nose and mouth, so of course teenagers should be encouraged to wear them, especially in school buses and in school, where social distancing will be impossible.
There is limited evidence that masks protect people, so the over 60s have no more need to wear them than anybody else.