At this time, we are not recommending school closures or cancellation of activities at schools.
The trigger for closing the schools will be a high absence rate, people keeping their kids home, to such an extent that they cant reasonably enforce the truancy penalties. They will then say they are closing the schools, out of an abundance of caution.
School is out forever ! Yeah ! One great gift we can give to the kiddies. Now get on your computers and finish your homework. Lol.