I have met a lot of teachers and been in a lot of schools all across the country. I believe that the vast majority of teachers are like those in the video and that a handful (less than 5%?) are like those in the Post article. I think from the lay point of view (and that includes the student point of view), what is confusing is why the effective teachers put up with and even defend the ineffective teachers.
A friend of mine sent me this email from his son's teacher:
This would not be an issue if the administrator of Timmy's school or the other educators there made the thought of sending out such an email completely unthinkable.