The same sorts of things happen to good school teachers here. The worst in high school is "the tenth grade writing test." It is a test of critical writing skills which requires truly lousy writing to make a high score. As a result, students are taught lousy writing by their tenth grade teachers, which then has to be undone by their junior and senior year teachers. Teachers who teach good writing get low test scores and get reprimanded by the administration. There's a serious problem with a system that requires incompetency.