Impact metrics in education? Where do I start? 
(Doesn’t mean you shouldn’t try to find and think about meaningful data yourself... but as soon as it becomes an exogenous “objective” or something you report out over time, the distortions take hold!)
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(Doesn’t mean you shouldn’t try to find and think about meaningful data yourself... but as soon as it becomes an exogenous “objective” or something you report out over time, the distortions take hold!)