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Charter school students meet President Obama, a charter school fan (courtesy of Pete Souza)

A study out today finds that the Knowledge is Power Program (KIPP), one of the most well-known charter school operators in the country, “substantially” impacts student test scores in reading and math. Half of the KIPP schools in the study are on their way to cutting the black-white achievement gap in half in three years, according to the researchers at Mathematica Policy Research, a New Jersey-based group.

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