That depends on your definition of safe. If schools are reopened children, teachers, staff, bus drivers, cafeteria workers, custodians, PTA members, coaches, etc. are all placed at increased risk. Some are going to die of COVID. Some who do not die are going to become critically ill with lifelong disability from COVID.
Some children are going to be minimally ill but are going to carry the virus home to grandma and she is going to die. Despite more than one person's continuing attempts to minimize the seriousness of this disease, children do catch it and do spread it. They catch it less often, become less ill, and spread it less frequently. But they do all of those things.
Thus this becomes a question of risk vs reward. Are you going to fire all the 50 year old teachers who refuse to work? Are you going to offer comprehensive alternatives for the family where Dad has obesity and diabetes? What do you do if a child tests positive? Do you just send him home? Do you send all his classmates home for 14 days? Do you close the whole school for every sick child? Can a child come if a parent is Covid positive?
I'd love to see schools open. I cannot imagine how families will otherwise work and provide child care. I am glad I am not the one making the decisions. But I hope that the decision is science based not ignoring the advice of the CDC and AAP. And keep in mind that as schools open the data is going to be changing. There is some
early suggestion that smaller class size may be a factor in avoiding spread.
Data from other countries where there is not an ongoing surge in cases may not translate to here. We are now over a half year into this pandemic. There is still no effective cure nor preventative. There is only risk reduction with social distancing [impossible in a school], mask wearing [extremely unrealistic with children], and handwashing may or may not play a role but it doesn't happen with kids.