This is messed up.
1. It was a "science lesson"? What in the world was the lesson?
2. Why the obsession with school shootings? These are actually extremely rare, even in the U.S. School shootings in the UK are almost unheard of.
3. This did make me want to listen to "I don't like Mondays," by the Boomtown Rats, written by Bob Geldoff before he became a total goofball. So I did.
4. As Anonyman points out, the best part is the claim that the students were only upset because they "shot" one of the popular teachers.
(Nod to Anonyman)
UPDATE: Read Ross's comment. EXCELLENT links.