The story behind the rise and fall of America's master math teacher
reason.com
reason.com
Anecdotally (not so much from my own schooling, but from talking to teachers), it seems that primary and secondary education is full of petty, childish people who are so threatened by anyone competent that they try to sabotage them. I have no idea if that's what happened here, though.
http://www.slate.com/blogs/blogs/kausfiles/archive/2009/04/2... The problem is that if the district wants to get rid of a poor teacher, that teacher has the right to stay (and force a younger, non-tenured, teacher to get let go instead).