Having made numerous phone calls and had numerouse discussions with people, I have moved out of the “this was one step too far” camp on the Governor’s decision to shut down school.
It appears that, as reported by Insider Advantage, gasoline is not the reason for the school shutdown, diesel is. Apparently, as someone in the comments below noted, Colonial Pipeline shut down the supply, fearing damage. Diesel was already in short supply. Having assessed the situation, the governor made the decision to shut down school due to a pending diesel shortage.