“…Some research has concluded that retention helps raise achievement levels in the years following the retention (Alexander et al, 2003); however, the overwhelming majority of studies investigating the link between retention and achievement have concluded that retention leads to achievement levels that are no better than, or even worse than, those of comparison students who were promoted. Numerous studies have found that students retained in the early elementary school years (i.e., kindergarten through third grade), when subsequently compared with students of the same grade who were matched to the retained group on prior (pre-retention) achievement or intelligence measures, demonstrated either no significant difference in achievement in comparison with their promoted counterparts (Coffield & Blommers, 1956; Ferguson, 1991; Johnson, Merrell, & Stover, 1990; Niklason, 1984, 1987; Phelps, Dowdell, Rizzo, Ehrlich, & Wilczenski, 1992; Pierson & Connell, 1992) or significantly lower achievement than their promoted counterparts (Dennebaum & Kulberg, 1994; Hagborg et al, 1991; Hong & Raudenbush, 2005; Jimerson & Ferguson, 2007; McCombs-Thomas et al, 1992; McCoy & Reynolds, 1999; Meisels & Liaw, 1993; Reynolds, 1992; Roderick & Nagaoka, 2005). Even in cases where there was an initial achievement advantage displayed by the retained group in the year following retention, this advantage completely dissipated, and at times was reversed, after 2 years (Abidin, Golladay, & Howerton, 1971; Jimerson et al, 1997; Mantzicopoulos & Morrison, 1992; Peterson, DeGracie, & Ayabe, 1987; Rust & Wallace, 1993).…”