The focus of this article is to draw attention to the presence and importance of travelling ideas, knowledge, and practices in Danish history of educational testing. The article introduces and employs a spatial methodological approach in relation to the connections between the international testing community and the emerging Danish practice of intelligence testing in the interwar years. The article represents a contribution to an investigation of the social and cultural exchange of educational ideas between the Anglo-Saxon world and Scandinavia, in general, and Denmark in particular. Moreover, the article argues for the positive gains of drawing on a spatial frame of interpretation when dealing with national educational history. (Contains 24 footnotes.)