It would not surprise me at all if that evidence is true, my comment was more devil’s advocate. However, I still think that calculation is a little different for elementary/middle vs. high school. If high schools are still conducted virtually until it is safer (i.e. through the end of the school year, I’m hoping most of the population will be vaccinated before school starts up again), it doesn’t prevent the parents from working outside of the home if their job requires them to do so because a 14 1/2 to 18 year old can be left at home to learn virtually. Maybe even 7th-8th graders, isn’t 12 the age when kids are allowed to be left at home by themselves? This time of the school year, most of the instruction being done in middle and high schools is preparing students for, and taking, standardized tests and state-mandated bull***t anyway.