Lebowski, I hope you are not a teacher, because, if you are,it clearly demonstrates the shallow thinking of some teachers. They prefer to attack the person rather than the suggestions that are being put forward to improve the next generation's education. There is no doubt that the current crop of teachers need greater scrutiny. To say it can't be done is just a camouflage to cover their inadequacies. Evaluation of an employee's performance has been the norm for some considerable time in the private sector
I have only cited two of what you term 'anecdotal' evidence, because there are to many to enumerate and I could spend a whole day citing similar examples.
Just a footnote to the teacher who was trying to contact me at home when I was still at work. He told me that 25% of the teachers in his school were on so called 'stress leave'. And do know why? Because they didn't like the Principal. If I took that approach in my working life I would have been out of work for at least 25% of the time. Let teachers go out into the private workplace at the executive level and they will soon discover real stress, not stress manufactured to suit their feeble minds.