They're trying to systematically determine what works and what doesn't. They've got to review a lot of different teachers in the same and different situations.

They're trying to systematically determine what works and what doesn't. They've got to review a lot of different teachers in the same and different situations. A teacher who wants to do better would greatly benefit from specific, actionable recommendations. Creating tools that can be used for deliberate practice is useful work, especially if the results can be widely distributed.