Public school leaders throughout the United States are approaching consensus about what it takes to educate all students well: more class time, smaller schools, a college preparatory curriculum, instructional coaching for teachers, and utilization of data to understand student needs. Yet results on the ground vary dramatically and remain, in large part, disappointing. The Bridgespan Group is a nonprofit organization that works with other nonprofits and foundations on issues of strategy, philanthropy, and leadership. They have confronted this question often and have come to believe that the critical difference between schools that excel and schools that do not is the quality of execution. This article highlights the experiences of three education nonprofits with which Bridgespan has engaged: YES Prep Public Schools, KIPP (Knowledge Is Power Program), and Envision Schools. All three have school designs that incorporate the elements mentioned, and all three have achieved sustained results on the dimension that matters most: their students' performance. In addition, they have successfully replicated these results in multiple schools.