Data Play

But for me, that also points to the study’s limitations. Economists need to find a way to quantify everything. Teachers with high value-added ratings may indeed have long-term positive impacts on students. But it is also possible that teachers who are excellent at project-based education have an even stronger longterm impact and we would never know it because their results cannot be teased out of a million pieces of data.

From Michael Winerip’s “Study on Teacher Value Uses Data from Before Teach-to-Test Era.”  (via Marc Aronson)

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