I believe this is exactly the problem. Overworked, underpaid, horrible students, horrible parents, and no support from the school who will sell you out and side with the students/parents, even where the teacher has done no wrong, simply to avoid hassle for themselves.
Few people would want to do such a job, even fewer men, who know full well that many female students and teachers will be desperate to find (or concoct) something they can use to complain about you and get some of those delicious victim points.