A New Measure for Classroom Quality - NYTimes.com - 84 views
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Test scores are an inadequate proxy for quality because too many factors outside of the teachers’ control can influence student performance from year to year — or even from classroom to classroom during the same year.
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there’s a far more direct approach: measuring the amount of time a teacher spends delivering relevant instruction — in other words, how much teaching a teacher actually gets done in a school day.
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Thirty years ago two studies measured the amount of time teachers spent presenting instruction that matched the prescribed curriculum, at a level students could understand based on previous instruction. The studies found that some teachers were able to deliver as much as 14 more weeks a year of relevant instruction than their less efficient peers.
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