Book excerpt: The development of character is a valued objective for many kinds of educational programs that take place both in and outside of school. Educators and administrators who develop and run programs that seek to develop character recognize that the established approaches for doing so have much in common, and they are eager to learn about promising practices used in other settings, evidence of effectiveness, and ways to measure the effectiveness of their own approaches. In July 2016, the National Academies of Sciences, Engineering, and Medicine held a workshop to review research and practice relevant to the development of character, with a particular focus on ideas that can support the adults who develop and run out-of-school programs. This publication summarizes the presentations and discussions from the workshop.