Pearson Successmaker Math Efficacy Study 2009-10 Final Report

SuccessMaker Math RCT Gatti Evaluation Inc. 9-15-10African American ***Hispanic 0.98Caucasian ****** Indicates group means are not statistically significantly different1. Cohen’s d effect size = estimated group difference / comparison sample standarddeviation2. The average effect size for studies with large samples (i.e., more than 250students) has been recently estimated at 0.13 standard deviations.The 5 th grade SuccessMaker and comparison group students, across all populations, had similarattitudes.5 th Grade SubpopulationStudent Math AttitudeEffect Size 1,2Lower achieving ***Male ***Female ***Reduced priced lunch ***Full priced lunch ***Not English proficient ***English proficient ***African American ***Hispanic ***Caucasian ****** Indicates group means are not statistically significantly different1. Cohen’s d effect size = estimated group difference / comparison sample standarddeviation2. The average effect size for studies with large samples (i.e., more than 250students) has been recently estimated at 0.13 standard deviations.Several 7 th grade at-risk populations (i.e., female, lower SES, not English proficient) hadstatistically higher math attitudes than the comparison group (i.e., 0.61 to 0.69 standarddeviations).7 th Grade SubpopulationStudent Math AttitudeEffect Size 1,2Lower achieving ***Male ***Female 0.63Reduced priced lunch 0.69Full priced lunch ***- 51 -