In the Netherlands, primary schools and daycares are reopening in 2 weeks, right after mid term. Our summer holidays are definitely not as long as in the US, we got six weeks in july/august. Government plans on reopening secondary schools from june 1st. Sport facilities may be openend for children under 12, so most are still closed. Pro athletes can go back to training, as long as the keep 1,5m distance. What ‘pro’ means and how they do it in contact sports such as gymnastics, I don’t know.
Schools will only have half of the students for the first 3 weeks back; we got half coming in on monday/thursday and the other half on tuesday/friday, wednesday is for teachers to keep up with the online schoolwork.