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PRES Associates, an independent research firm, conducted a longitudinal randomized control trial (RCT) study to assess the effectiveness of enVisionMATH in helping students attain critical math skills. The study was designed to address all standards and criteria described in the What Works Clearinghouse (WWC) Study Review Standards. The study commenced in 2007–08 with 2nd and 4th grade students and followed these students into 3rd and 5th grades in 2008–09. The results of this study are outlined in the Year 2 results report below.
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