Better Feedback for Deeper Learning
A Principal's Reflections
OCTOBER 23, 2022
Goodwin & Miller (2012) provided this summary: In Marzano, Pickering, and Pollock's 2001 meta-analysis, McREL researchers found an effect size for feedback of 0.76, which translates roughly into a 28-percentile point difference in average achievement (Beesley & Apthorp, 2010; Dean, Pitler, Hubbell, & Stone, 2012).
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