Apparently, it is possible to put a man on the moon, but it is not humanly possible to evaluate teachers.
I have actually heard this said with my very own ears-that it is impossible to evaluate teachers by ANY (did you hear that...ANY) objective criteria.
Just as liberal journalists do not believe they have any human or political bias (they are the only humans on the planet who are 100% "objective"), so too are teachers exempt from objective performance criteria. It just doesn't exist! Not humanly possible!
"You’ll have to forgive the teachers’ union, they’re very new to the
concept of having one’s continued employment tied to doing the job well."