There are ZERO deaths in California of school age children from Covid-19 and its related problems. That's zero. Not one. The couple of cases reported in New York are very questionable; kids died from other stuff, but were attributed to Covid-19.
Democrats count the loss of education as a ZERO COST. Thus, any risk at all tips the scale to staying home. The teachers' unions OWN the Democrat Party, and the teachers haven't lost a DIME over this, and they sit happily in their caves knowing that they will never lose a dime, given the current political climate.
Republicans want to get back to work and to INDIVIDUALLY assume the risks and responsibilities for that choice. Democrats, few of whom actually have real jobs, are content to stay in their caves, and to blame Trump for every negative thing that happens.