Confirming my thoughts from an earlier post, Jennifer Marshall and Kirk Johnson have put up a piece over at National Review Online that explains how to interpret the often conflicting Charter School data that has recently been released. In my original post, I compared the data and found that the research (PDF) of Caroline Hoxby, as opposed to that of the Department of Education’s National Center for Education Statistics (NCES), seemed more robust. According to Marshall and Johnson, Peggy Carr, the NCES Associate Commissioner for Assessment, agreed, stating that “the methodology Hoxby used, ‘is a more superior design.'”