From the United States Surgeon General today:

“What I want people to know is the biggest determinant of whether or not we can go back to school actually has little to nothing to do with the actual schools – it’s your background transmission rate,” Adams said, speaking on CBS This Morning. “And it’s why we’ve told people constantly that if we want to get back to school, to worship, to regular life – folks need to wear face coverings, folks need to practice social distancing. Those public health measures are actually what’s going to lower the transmission rate.”

I would also say that he might want to go into actual schools and see what resources, space, time, and staff available for a safe reopening.