I had worse teachers. They didn't know the subject they were trying to teach or they didn't know how to present the material in a logical, concise manner. And it ain't recent either. I'm talking about the 1950 when I was in school and I saw it when my 3 sons went to school. Home schooling wasn't allowed back then. Couldn't afford private school so the wife and I spent a lot of time doing supplemental teaching of subjects that should have been done by the teachers.