Pearson Successmaker Math Efficacy Study 2009-10 Final Report

SuccessMaker Math RCT Gatti Evaluation Inc. 9-15-105 th Grade SubpopulationProcess and ApplicationsEffect Size 1,2Lower achieving ***Male 0.64Female 0.52Reduced priced lunch 0.63Full priced lunch 0.57Not English proficient 0.49English proficient 0.64African American 0.61Hispanic ***Caucasian 0.68*** Indicates group means are not statistically significantly different.1. effect size = estimated adjusted group difference / comparison sample standard deviation2. The average effect size for studies with large samples (i.e., more than 250 students) hasbeen recently estimated at 0.13 standard deviations.Seventh grade low SES, non-English proficient, and female students all dramaticallyoutperformed their comparison group counterparts on GMADE Total score (i.e., 0.57 to 0.66standard deviations) and the Process and Applications subtest (i.e., 1.06 to 1.39 standarddeviations). Further, lower-achieving and Hispanic 7 th grade SuccessMaker students statisticallyoutperformed their comparison group peers on the Process and Applications subtest (i.e., 0.58and 1.19 standard deviations). The study groups scored statistically the same for all 7 th gradepopulations on the Concepts and Communication and the Operations and Computation subtests.7 th Grade Subpopulation GMADE Effect Size 1,2Lower achieving ***Male 0.61Female 0.66Reduced priced lunch 0.57Full priced lunch 0.78Not English proficient 0.60English proficient 0.57African American ***Hispanic ***Caucasian ****** Indicates group means are not statistically significantly different.1. effect size = estimated adjusted group difference / comparison sample standarddeviation- 47 -