I think you just helped prove my point. You said they can't ask you anything when you apply for a teacher's job. The school, or whoever is hiring you, has no way to know if you are a liberal or a conservative. This means that the only factor effecting who applies and gets these jobs, is who is actually applying. I find the natural conclusion here is that the liberals are looking for, and getting the jobs that allow them to help and teach people. The conservatives, at large, are too selfcenter and capitalistic to consider taking such a job. Not enough pay or potential person gain. So how does the hiring process effect the % of liberal teachers again?
No, to attack the liberals, because they are willing to help people and take teachers jobs, is just pointing to your dislike for liberal teachers. Now, some would consider you a loud mouth because of this. This certainly gives us other things to ponder. Is there such a thing as a closet liberal, with a consevative complex?