Should the state government order schools to provide online only classes in order to combat coronavirus?

In July 2020 many US School districts were ordered to be closed for in-person instruction for the Fall 2020 semester. The closures were mandated by Governors and Mayors who responded to concerns from public school teacher unions. Proponents of school closings argue that cities that closed schools earlier and longer during the Spanish Influenza pandemic in 1918 had much lower mortality rate. They also argue that schools do not have the financial resources to adapt to safety guidelines recommended by the CDC. Opponents of school closures argue that people under 24 years of age make up approximately % .0015 of all Covid-19 deaths in the U.S. They also argue that in the U.S. every year an average of 190 children die of the flu, 436 from suicide, 625 from homicide, and 4,114 from unintentional deaths such as drowning.