This spreadsheet accompanies Professor Gamoran's February 1 lecture/webcast for the Berman Jewish Policy Archive @ NYU Wagner: Education researchers have become increasingly aware of the challenges of measuring the impact of educational practices, programs, and policies. Too often what appears to be cause and effect may actually reflect pre-existing differences between program participants and non-participants. A variety of strategies are available to surmount this challenge, but the strategies are often costly and difficult to implement. Examples from general and Jewish education will highlight the challenges, identify strategies that respond to the challenges, and suggest how the difficulties posed by these strategies may be addressed.