We see a preview of what reopening schools is going to be like:
Summer Camp Closes With 82 Infections

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Kanakuk Ministries closed its K-2 camp for 13 to 18-year-olds last week after the outbreak was discovered, Stone County Health Department announced on Facebook Monday.

Many of the people who tested positive for COVID-19 did so after leaving the camp and returning home, health officials said.

The problem with things like camps and schools, is that you are trusting all the other parents to isolate their kids with your same vigilance. But some of those parents simply don't. The camp organizers required everybody to self-isolate for two weeks before sending their kids to camp. How naive can you be?