No universal guideline exists for judging the practical importance of a standardized effect size, a measure of the magnitude of an intervention’s effects. This working paper argues that effect sizes should be interpreted using empirical benchmarks — and presents three types in the context of education research.
In these remarks, delivered at Speaker Nancy Pelosi’s National Summit on America’s Children on May 22, MDRC President Gordon Berlin summarizes rigorous research evidence showing that supplementing the earnings of parents helps raise families out of poverty and improves the school performance of young children.
Context, Components, and Initial Impacts on Students’ Performance and Attendance
During the first three years of implementation in six urban schools, The Talent Development Middle School model—an ongoing, whole-school reform initiative—had a positive impact on math achievement for eighth-graders but appeared to produce no systematic improvement in outcomes for seventh-graders.