This document summarizes and discusses a keynote address given by Siedentop in 1989 calling for clearer definitions of content knowledge in physical education. It outlines how at the time, physical education programs were being cut with criticisms over what the field's importance is. Siedentop argues that the study of sport performance should be considered worthy of academic credit and that teacher education programs need to better prepare teachers in physical education content, not just methods, in order to improve school physical education programs.