This article examines whether Elinor M. Brent-Dyer's Chalet School books--a series of girls' school stories spanning the late 1920s to the early 1970s--can be regarded as historical sources for the study of physical education and dance in girls' boarding schools during this period. An overview of her experience as teacher and headmistress, an examination of the training and role of PE teachers during this time, and observations on the role other staff played in games coaching and dance teaching confirms that this children's literature is an accurate representation. The incorporation of contemporary details in her writing, through referencing current events for example, strengthens the case for acknowledging this. However it is concluded that the source becomes less accurate in the latter half of the series when Brent-Dyer lost contact with the education world and with young people.