Are Teachers Free to Dissent?

The public education system, right down to kindergarten teachers, is hardly a free speech zone. And one of the most egregious violations of free speech is the coerced speech of forced political contributions.
Even though this was specifically outlawed by court cases and an initiative here in Washington, our governor in her previous incarnation as Attorney General screwed things up so much that teaches in Washington were still being forced to contribute to liberal causes and Democratic politicians.
And now, the United States Supreme Court has decided just whether or not teachers are free to say what they want or, just as importantly, say nothing and keep their coerced campaign donations in their own pockets.