KNOWLEDGE BRIEF 7
by Douglas N. Harris
Value-added methodology is being applied to the evaluation of teachers in tested grades and subjects, but the vast majority of the research on value-added measures focuses on elementary schools only. Secondary grades differ from elementary grades in ways that are meaningful for the validity and reliability of value-added measures for secondary teachers. Middle and high school teachers have more students, which increase reliability of value-added scores, but this advantage is offset by tracking, which reduces reliability at those grade levels.
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Recent Comments
Mark Atkinson on How Might We Use Multiple Measures for Teacher Accountability?
Doug -- Your analysis is spot on. The averaging of these multiple measures feels a bit like averaging one's pulse,...Kelly Burling on How Might We Use Multiple Measures for Teacher Accountability?
I applaud this piece, it does a really nice job of presenting data and discussing implications from the measurement, policy,...Jay Blain on What Do We Know About Using Value-Added to Compare Teachers Who Work in Different Schools?
Unfortunately, all of this vigorous analyzing of value-added models becomes moot if the underlying data is faulty. If the...Tim Slekar on What Do We Know About Using Value-Added to Compare Teachers Who Work in Different Schools?
What if test score gains are not really indicators of "value?" In other words what if we didn't care...Philip Hallinger on What Do We Know About the Use of Value-Added Measures for Principal Evaluation?
This is a thoughtful, balanced and useful analysis of a tricky subject. It's very well done, up to the last...