Practical theology and religious education seem to operate within the organisational structures of many Protestant theological faculties, in view of the respective subject cultures, textbook series, reference sciences, career paths and reflections on professional theory as two disciplines clearly differentiated from each other. The disciplinary debates seem to be increasingly disconnected from the horizons of knowledge and discourses within the other sub-discipline(s) in thematic, interdisciplinary, methodological and often also personnel terms. The question arises whether such specializations and tendencies of pillarization are still up-to-date in view of the pluralistic dynamics in individual life-world, society, church and theological science. For this reason, the contributions in this volume illuminate common questions, scientific theoretical foundations and research-related possibilities of a new disciplinary relationship between practical theology and religious education studies by means of systematic, empirical and thematic approaches to possible new forms of a constructive relationship.