Precisely. Common sense should prevail. My Mum is absolutely furious with my school. My brother in Year 11 has an exam this afternoon, and the entire school has been sent home. My Mum can't pick him up because we cannot get out of our road (it is a hill and completely snowed/iced over) so he is having to go to a friend's house. All of this would have been averted if either:
a) School was shut from the word go except those with exams
They sent everyone home except those with exams, who would be supervised in revision classes by the few teaching staff that made it in.
But of course, teachers know best don't they...