By 1998, only 13 of the current 40 states that fund prekindergarten had completed and released an evaluation of the impact of their program on the participating children. The 60 reports that present the findings of these 13 prekindergarten evaluations were summarized and critiqued by Gilliam and Zigler (2001). Between 1998 and 2003, state-funded prekindergarten systems in an additional five states had been evaluated, plus two different prekindergarten systems in states that had already evaluated a different prekindergarten system within the same state. Two of these new reports focus on universal prekindergarten systems (Georgia and Oklahoma). This paper updates the original report by Gilliam and Zigler (2001) by adding these additional evaluations in order to provide a current discussion of the methods and findings of these evaluations. (author abstract)