This review is of The Comprehensive Longitudinal Evaluation of the Milwaukee Parental Choice Program: Summary of Fourth Year Reports, published by the School Choice Demonstration Project, University of Arkansas. The report makes eight claims about the effectiveness of the program, most of them positive. On the key issue of achievement of students receiving vouchers, however, the report merely concludes that the program is not harmful. As the report’s title suggests, the evidence for all its claims is almost exclusively the researchers’ own work, with no reference to other academic literature. Importantly, none of their own referenced documents were peer-reviewed. Even as some of the report’s claims are in accord with the broader literature, their appearance in isolation makes for an overly simple evaluation of the MPCP.