WASHINGTON, Oct. 13 (TNSres) -- The American Educational Research Association issued the following news release: Third-grade retention can increase the reading and math scores of struggling students, with positive effects lasting into middle school, according to new research released today. The study, by NaYoung Hwang at the University of New Hampshire and Cory Koedel at the University of Missouri, was published today in Educational Evaluation and Policy Analysis, a peer-reviewed journal of the  more