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Schools do not define education, and they are not the only institutions in which learning takes place. After-school programs, music lessons, Scouts, summer camps, on-the-job training, and home activities all offer out-of-school educational experiences. In Learning at Not-School: A Review of Study, Theory, and Advocacy for Education in Non-Formal Settings, Julian Sefton-Green explores studies and scholarly research on out-of-school learning, investigating just what it is that is distinctive about the quality of learning in these "not-school" settings.