The ambition of this two-volume publication is to illustrate the applicability of social pedagogy - as an academic and professional paradigm - to work with the most diverse target populations. It is launched at a moment when important and highly interesting developments can be observed in the United Kingdom: a country without a traditional social pedagogy model has started importing social pedagogy from countries with a social pedagogy tradition. Social Pedagogy for the Entire Lifespan illustrates how social pedagogy - as a model in theory and practice - has been and is currently being used, around and across Europe, for work with people of all age groups. Volume I is dedicated to the theory and history of social pedagogy, as well as to practice with children and young people. Chapters cover Belgium, Denmark, France, Germany, Norway and Spain. Volume II will include chapters on practice with adults and seniors, as well as chapters on further perspectives.