Odd, I'd have thought that they would have cancelled school if there was even the slightest chance you're all going to be blown up. Sounds like the upper managment aren't taking this one seriously, else you wouldn't be there.
When my school had it's bomb threat, it was just two kids who called up the school, and said in a sterotypical arab voice that there was a bomb. Now they're classed as terrorists and can't legally enter your lovely Americaland, which is hilarious.
...and with that post, people of Britain were so surprised that "tea was spilled, crumpets were dropped and monocles everywhere popped out in shock."