Utterly strange information here ... I mean the school thing. Never heard of a teacher throwing things at students. How barbaric! Where I went to school it was always the students throwing things at the teacher. The minute the math teacher turned his back, the blackboard was splattered with spitwads. "You knunkleheads, who did that?" He was a horrible math teacher. Good teachers were treated treated respectfully, though some pretty bizarre practical jokes transpired from time to time... and the chemistry lab was indeed blown up by the school dunce randomly pouring concentrated chemicals down the drain (after he grew up he owned his own engineering company, while the school chem whiz ended up as a welfare bum, and the physics whiz kid made millions early on in software design, then spent twenty in prison for income evasion, and now is by far the most informed min wage security guard the Tech Museum has ever employed.