Teachers have a right to free speech, too (with a poll) : Pharyngula:
Elizabeth Collins was a liberal, concerned teacher who created a blog to express her views about stuff she cared very much about, such as writing, teaching, and activism. Read it, it's good stuff, and it's obvious she cares passionately about those subjects. She also wrote about her experiences as a teacher, taking care to avoid naming the school or any individuals by name, but still being free about criticism and praise while protecting people's privacy.There're reasons my mother quit teaching after the last private school she worked at let her go.
I know, most of you are already going "uh-oh", and you already know where this is going...