When I was in high school we started getting a rash of bomb threats (1986 or 1987). They would sweep the gym for bombs then send us all in there while they searched the rest of our high school section (kindergarten through 12th grade in one building), I have no clue what they did with the little kids. One day they managed to trace one of the calls, it was coming from the payphone outside the elementary office. The guy who sat behind me in chemistry worked in that office during study hall and was calling in the bomb threats. I don't know what ever happened to him but he wasn't in chemistry any more. He was an odd bird but I never would have expected that out of him; I was one of the few people he would actually have a conversation with.
Hopefully the punishment for those caught making the bomb threats will be severe enough to deter others.
Ber