Goodman Research Group, Inc. (GRG) served as the external evaluator of the three-year NSF-funded Science Festival Alliance (SFA), a collaborative started by the University of California San Diego, the MIT Museum (Cambridge, MA), the University of California San Francisco, and The Franklin Institute (Philadelphia, PA). The focus of the SFA over its first three years was helping establish and sustain science festivals in each of these four cities. The Alliance’s long-term goal is to facilitate the creation of a growing network of festivals and a community of science festival practitioners. To