Sharing what we're doing and learning has long been a priority at Wallace, and the past several years have seen a growing number of foundations also taking steps to "open their doors and windows." Some aspects are easy to report on: program initiatives, the purpose of individual grants to specific organizations, a foundation's overall financial health. Less easy to measure, and more difficult to discuss publicly, are the results of a foundation's work. What progress have we made toward our ambitious social change goals? How do we know? How can we talk about what didn't work? These are the issues that we and other foundations are wrestling with.