On the topic of kids, recent studies failed to find a single case of a child passing the virus to an adult. While I'm sure it's happened somewhere at some point, the only research and data we have right now seems to show that kids just never really become contagious.
One of the examples cited was a 9 year old British boy. They carried out contact tracing and out of the 170 people he came into contact with, 0 caught the virus.
Open everything up as if nothing were wrong? No, but we should be putting together plans on how to get kids to back school this fall. Take the summer to develop a plan that protects teachers from other parents and staff, but it's becoming more and more clear it's not kids who are spreading this thing.