The American Statistical Association on value added measures of teaching

2 Jun

The American Statistical Association has released a report on value added measures of teaching that is now available on line. Here is the central finding:

“Most VAM studies find that teachers account for about 1% to 14% of the variability in test scores, and that the majority of opportunities for quality improvement are found in the system-level conditions. Ranking teachers by their VAM scores can have unintended consequences that reduce quality.”

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One Response to “The American Statistical Association on value added measures of teaching”

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  1. A year from now value added will still be invalid | peakmemory - August 23, 2014

    […] year. But, as I have pointed out many times here, value added assessments of teaching are invalid. The American Statistical Association […]

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