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April 29, 2013 11:59 PM | 1812 views | 4 | 6 | | DEAR EDITOR:It would have been folly for the Cobb school board to spend $7.5 million on new math textbooks aligned with the Common Core national standards.For one thing, because the Common Core math curriculum has been used less than a year, we have no test scores or other data yet showing that it???s effective. (This is a particular concern in ligh
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