We know it happens. We have seen art save lives, cultural practices bring people together, cultural activism mobilize people, and artists activate the social imagination to make something new possible. While the potency of the arts as a catalyst for civic and social change is widely observed, cultural and community leaders struggle to measure it and make the case for the value of arts in civic engagement. Whose standards should apply? What evidence should be tracked and documented? How can hard-to-measure civic outcomes be substantiated? And, can they be attributed to our arts-based civic engagement efforts exclusive of other factors?