Alfred G. Binford

When John Oliver, on his HBO "Last Week" show, did a recent segment on the problems with standardized testing, the one company that he mentioned at some length was Pearson - and that's no surprise. Pearson is the largest education company in the world (Fortune magazine says it may control up to 60 percent of the U.S. testing market), and it has become a high-profile target of opponents of high-stakes standardized testing.

How dominant is Pearson in American public schools? Oliver noted that it is possible for American students to take Pearson-designed tests

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