In Germany, three groups can be identified who work in all-day schools and take on pedagogical tasks in extended education: Teachers, pedagogical staff, and staff without a pedagogical qualification (lay pedagogues). While the professionalisation debate on teachers and pedagogical staff already exists, there is a lack of knowledge on lay staff. In this article we consider the group of lay pedagogues. Findings from existing studies explore in more detail the expertise that personnel bring into all-day education.