I think going with that idea confronts another problem - Teachers having no clue what they're talking about. When most people talk politics they're talking "gut" feelings about which side they like regardless of whether the "other" side really has the better argument. The educational value of this seems to be incredibly low to me, and it seems improper to foist your political views (teacher) onto the student.

Now if they wanted to start teaching political science classes or a series of classes that focused on that I would be all for it. My 10th grade History class did this, we spent a semester looking at Marx, Locke, Aristotle, Plato, etc. Fortunately, my professor didn't preach one view over the other - she just made sure we had the basic idea about what each stood for.