I'm in the yes camp. My daughter is almost 11. They have to stay outside and only 1 friend, no groups. Both sets of parents have been working from home for two months now and none of us are high risk. Kiddo is reminded of social distance and the girls really try hard to keep to it. They mostly go on bike rides or walk on the school track. Hands are thoroughly washed when coming back inside.

Honestly, we can't live in a bubble forever. My area is on a downward trend, our field hospitals never got used, hospitals aren't overrun and some business has opened back up. This isn't going away. We need to start teaching our kids how to be responsible and how to properly wash hands and when they should do so.

I know this will get downvoted and that's fine. You have to judge what's best for the families involved.