The measure for this study was student math achievement as measured by scores and grades reported by the school. (elearnmag.acm.org)
Dr. Pope's org Challenge Success, which used more than twenty studies on homework for its papers, found similar results, reporting,» [I] n a recent study comparing the standardized math scores across multiple countries, no positive link was found between student math achievement and the frequency or amount of homework given (Baker & LeTendre, 2005). (mtv.com)
We estimate that the New York City bonus program had a positive effect on student math achievement in these schools in both program years, although the estimated effect in the second year fell just short of conventional levels of statistical significance. (educationnext.org)