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I do think we know that a teacher who knows what he or she is doing, knows their subject matter, and knows how to impart knowledge to kids is a critical piece of closing the achievement gap.

"The Education Week Interview: Margaret Spellings". Interview with Lynn Olson and Erik W. Robelen, www.edweek.org. February 9, 2005.
I do think we know that a teacher who knows what he or she is doing, knows their subject matter, and knows how to impart knowledge to kids is a critical piece of closing the achievement gap.