It makes zero sense to claim that testing will keep schools open, if you aren't planning to do anything if staff and students test positive.
@luckytran For the last year and a half; the staff at my daughter's school have been prohibited from notifying people about COVID cases - even as they have rightly kept sending out exposure notifications for everything from lice to RSV to pertussis.
Make it make sense.
(Fortunately, my daughter has been quite good about wearing her mask.)