Home stay after the weekend trip

I am not allowed to go to school for a week because I was out of Shanghai for the weekend! Due to the frantic concern they have about H1N1, after we returned from Guilin, we were told by the school that all school kids have to stay home for a week if they leave Shanghai according to the new city law. Mom did not know that beforehand, so she is paying the price for telling the inconvenient truth.