This study duplicated the procedures used by Greene and Winters (2006) on data from the Miami-Dade school system with the advantage of an additional two year's worth of information. The results indicated that the effects of the retention policy are far from clear and arguably negative. There is considerable evidence to suggest that the apparent gains of the retained students may have been short-lived if not completely illusory. The lack of precise measurement and a precisely appropriate comparison group prevent an indisputable interpretation. The superficially obvious benefit of retention to some students and the equally obvious detriment of retention to others will likely keep large-scale test-based promotion policies a matter of heated debate subject to political fashion for the foreseeable future.