What is good teaching? Can it be quantified as educational researchers are trying to do. I, for one, am glad I am nowhere near a coding sheet and instead rely on observation, common sense and intuition.
Good teaching is far more than directly observable and measurable behavior. Good teachers possess traits and qualities that either cannot be quantified or are hard to quantify. I would even go so far as to claim that trying to quantity these traits and qualities is a case of scientism, which I idiosyncratically define as an attempt to quantify qualities that are ill-suited for quantification.
How, for example, do you go about quantifying an inspiring, radiating personality? How do you quantify a sense of humor, wit, a capability for empathy, a developed sensitivity to the zone of proximal development? How do you quantify imagination, creativity and a capacity to teach for understanding? How do you distinguish numerically between genuine and phony sentiment and what numbers would you assign to a story-telling capability?
I think education would be much better served if we approached the question of what makes a good teacher from a humanistic-philosophical perspective. But then, of course, we would first have to have a notion of desirable educational goals because "good" does not exist in a vacuum.