This article focuses on how a BSc (Household and Social Science) from Kings College of Household and Social Science (KCHSS) inflected the life and work of Winifred Egan (1915-2007), a teacher whose career spanned elementary and secondary schooling and teacher education. The article illustrates the ways in which KCHSS graduates deployed disciplinary knowledge around the developing science of nutrition not only in newly opening spaces of laboratories but also in women's customary spaces of school teaching. The article also demonstrates how the focus on science fostered at KCHSS and the technical proficiency in craft skills that characterised much teaching of domestic subjects were re-balanced in differing teaching contexts.