I never once said anything about leaving the room.  I'm saying put your pencils down and come up with the best plan possible to defend yourselves if the shooter does somehow make it into the room.  Continuing to take a test while there is an active shooter on campus is completely idiotic.  There definitely has to be some ethical violation by even counting those test scores towards the student's grades when they were taking a test while simultaneously fearing for their life.  I would expect a teacher of all people to realize that...  I am a grown adult and if some professor told me to keep taking a test while a shooting is going on in the next building over, I'd tell him to go fuck himself.  That's such a ludicrous suggestion.