This paper draws on the "accidental" results of a UK national survey of school libraries to explore how school librarians can contribute to student pastoral care. Although the survey did not ask specific questions about student social development, responding librarians identified three key aspects of their contribution: support for learning; maintaining a safe and secure environment; and providing individual support. The librarian's role in these aspects of social development support are described and then elaborated into three approaches to the pastoral role: "play it down"; promote the social role of libraries within the school; or focus on the pastoral needs of individuals. Views are then offered on how school managers, teachers and school librarians themselves can build on the existing pastoral role in a context where there is no statutory requirement to provide school libraries and where library development is heavily dependent upon the vision of the school senior leadership team.