The inclusion of out-of-school places of learning represents an important contribution to the quality of school teaching and learning processes. This volume shows the potential and significance of extracurricular venues in theory and practice in a fundamental and systematic way for all subjects and school levels. Robert Baar and Gudrun Schönknecht discuss theory-based didactic-methodological principles and provide a comprehensive overview of empirical research results. General didactic references such as learning prerequisites, quality of learning tasks, individualization and differentiation, learning support, and performance assessment are examined, and subject-related and interdisciplinary concepts of teaching and learning at extracurricular venues are presented. An analysis of current education plans illustrates the importance of extracurricular learning places in different types of schools and subjects.