Yep. They are just using this as an excuse to try to get more money. In many districts they found a way to offer some form of distance learning online, they can figure it out using their current contracts or they can get out of the way and let someone else do the job.
plus the longer schools stay closed the longer an employee can refuse to go to work and still get unemployment even if the company pushed for them to come back (if they have their own kids) ...one of the requirements and allowances of the Cares act.