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<title><![CDATA[A.J. Duffy - Articles - RealClearPolitics]]></title><link>http://www.RealClearPolicy.com/authors/rss/archive/21459.xml</link><description><![CDATA[A.J. Duffy]]></description><category domain="21459">Author</category><item>
							<title><![CDATA[Rating Teachers Isn't That Easy]]></title>
							<link>http://www.usatoday.com/news/opinion/editorials/2010-09-09-editorial09_ST1_N.htm</link>
							<guid><![CDATA[http://www.usatoday.com/news/opinion/editorials/2010-09-09-editorial09_ST1_N.htm]]></guid>							
							<pubDate>Thu, 09 Sep 2010 00:00:00 -0500</pubDate>
							<author>A.J. Duffy</author>
							<description><![CDATA[Teachers are more than the sum of a single measure, which is why the value-added rating system is so unreliable.When the Los Angeles Times recently  published scores for 6,000 local teachers using the value-added system &mdash;  a statistical measure of student improvement on...]]></description>
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