A just-released report by DC Action for Children verifies what The Washington Examiner predicted two years ago. Impact — former DC Public Schools Chancellor Michelle Rhee’s much-heralded new approach to transforming one of the nation’s worst public schools systems — hasn’t had much of an impact.

According to the group’s independent analysis of D.C. standardized test scores, third-graders who spent their entire academic lives under Impact made only statistically insignificant gains in math and reading since 2007, when the School Reform Act was passed and Rhee began implementing her reforms.