There was some question about this.

Courtesy of NYT:

In the heated debate over reopening schools, one burning question has been whether and how efficiently children can spread the virus to others.

A large new study from South Korea offers an answer: Children younger than 10 transmit to others much less often than adults do, but the risk is not zero. And those between the ages of 10 and 19 can spread the virus at least as well as adults do.

The findings suggest that as schools reopen, communities will see clusters of infection take root that include children of all ages, several experts cautioned.

“I fear that there has been this sense that kids just won’t get infected or don’t get infected in the same way as adults and that, therefore, they’re almost like a bubbled population,” said Michael Osterholm, an infectious diseases expert at the University of Minnesota.

“There will be transmission,” Dr. Osterholm said. “What we have to do is accept that now and include that in our plans.”

Past studies have suggested that children may be less likely to spread this virus but according to the director of the Harvard Global Health Institute, this one is far more comprehensive. 

I think just based on anecdotal data that this study is likely correct, and that would explain the rate of transmission in some of these summer camps and summer school programs. 

The bottom line is that we still know very little about this disease and until we know more any actions on our part to return to business, as usual, are likely doomed to fail.