Pearson Successmaker Math Efficacy Study 2009-10 Final Report

SuccessMaker Math RCT Gatti Evaluation Inc. 9-15-103 rd Grade SubpopulationProcess and ApplicationsEffect Size 1,2Lower achieving 0.91Male 1.26Female 1.35Reduced priced lunch 1.34Full priced lunch 1.25Not English proficient 1.65English proficient 1.29African American 1.52Hispanic 1.41Caucasian 1.181. 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.Low SES, non-English proficient and female 5 th grade SuccessMaker students statisticallysignificantly outperformed their comparison group peers on GMADE Total score (i.e., 0.48 to0.53 standard deviations), as well as, both the Process and Applications (i.e., 0.49 to 0.63standard deviations) and Operations and Computation subtests (i.e., 0.55 to 0.73 standarddeviations). In addition, 5 th grade African-American students using SuccessMaker statisticallyoutperformed their peers not using SuccessMaker on the Process and Applications subtest.Conversely, 5 th grade African-American comparison group students statistically outscored theSuccessMaker group on the Concepts and Communication subtest.5 th Grade Subpopulation GMADE Effect Size 1,2Lower achieving ***Male 0.60Female 0.49Reduced priced lunch 0.53Full priced lunch 0.50Not English proficient 0.48English proficient 0.55African American ***Hispanic ***Caucasian 0.58*** Indicates group means are not statistically significantly different.1. effect size = estimated adjusted group difference / comparison sample standarddeviation- 45 -