“…Considerable research conducted over three decades has documented the impact of teacher practices that highlight differences in children's relative abilities on children's achievement, motivation, and self-views (Ames, 1992;Brophy, 1983;Kuklinski & Weinstein, 2001;Mac Iver, 1987;Rosenthal & Jacobson, 1968;Urdan & Midgley, 2003;Weinstein, Marshall, Sharp, & Botkin, 1987). This body of evidence is drawn from research on teacher expectancy effects (for review see Jussim & Harber, 2005), classroom goal structure (for review see Urdan & Midgley, 2003), classroom task structures (Simpson & Rosenholtz, 1986), and teacher frame of reference (Marsh & Craven, 2002).…”