So if old folks (and I'll put myself in that category, as I am no spring chicken) are still going to get it, then we should go ahead and open the schools. As safely as possible. Are kids going to get infected and bring it home to their families? I am sure that will occur. But you try to do everything you can to minimize the risk.
That's HUGE assumption. and it's really based on the fact that they think americans aren't going to wear masks nor stay at home. Matter of fact, the US did exactly the same wargames called Crimson Dawn and came to the exact same conclusions.
So it's not the kids, it's everyone else around you.
I, for one, rather my kids be protected and not have to go through the horrors of staying in a hospital.