If it's not valid, reliability doesn't matter so much! More on VAM-ing & SGP-... - 0 views
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Jeff Bernstein on 28 Apr 12This post includes a few more preliminary musings regarding the use of value-added measures and student growth percentiles for teacher evaluation, specifically for making high-stakes decisions, and especially in those cases where new statutes and regulations mandate rigid use/heavy emphasis on these measures, as I discussed in the previous post.