Here's my feelings on school closures as it is a concern on the East Coast as well.
Who benefits the most from school closings?
Middle-upper class suburban families, majority is white. Parents can stay home, work, and supervise they're children to make sure they log on while being comfortable.
Who gets hurt the most?
Lower income inner-city and lower income suburban neighborhoods, majority black and latino. Unfortunately these parents cannot afford to stay home and have to make a choice. Those who go to work will likely have kids that don't attend online classes. There are also likely other reasons parents don't enforce attending schools.
This is systematic failure across the United States and a horrible idea. Why would we close schools when Walmart and Target are open? There has not been a major outbreak of those employees of note. The outbreaks have occurred where bars, clubs, and restaurants are open at full capacity as well protests.
Kids don't need to wear mask. CoVid is far less dangerous than the Flu. Teachers' should wear masks and keep hand sanitizer with them at all times. FYI, the lowest infection rates are in extended suburbs, rural areas and cities less than 100,000.