Alnoor Ebrahim is a Professor at The Fletcher School of Law & Diplomacy at Tufts University. His work addresses two strategic challenges facing social change organizations: How should they measure and improve their performance? How should they address competing demands for accountability from diverse stakeholders? These questions are addressed in his new book, Measuring Social Change (Stanford University Press, 2019). Professor Ebrahim has served on advisory boards to the Impact Reporting and Investment Standards (IRIS), Acumen’s Lean Data Advisory Council, and on a working group established by the G8 to create global guidelines on social impact measurement.