War Crimes Trial of President Bush
These are certainly not isolated cases of teachers crossing the line of political neutrality. Prior to these stories there has been a debate about uber-liberal college professors. I, personally, have been affected. In 2004, during a medical school interview, I was asked about my opinion on the war in Iraq. After calmy and succintly expressing my views, the professor who was interviewing me began berating me, claiming that "you can't really believe that," or "you have to admit this is about oil". I consider this inappropriate conduct, considering the circumstances.
While all of this does disappoint me (as well as anger me, frustrate me, annoy me, etc...), I think it provides something useful to me, as well. I think this is a great incentive to support voucher programs. While a schoolboard may consider suspension of a teacher who claims that Bush and Hitler are very similar, the parents of students at the school can do very little about it, other than petition their school board. They are still forced to send their child to that school. In a free-market educational system, they could take their business elsewhere, to a school more concerned with a neutral education system.
I am not advocating "liberal schools" and "conservative schools" (I think neither should exist), but rather the fact that if one of these schools arises, parents would have to option to remove their impressionable child from the school that presents such an agenda.