Questions of children's agency have experienced a resurgence in education theory over the past years. Yet, there have been few attempts to examine children's agency in the context of a primary classroom from the viewpoint of the curriculum. This gap is being addressed by a longitudinal project exploring the impact of the National Curriculum for England on children's agency through a critical discourse analysis of the curriculum text and an ethnography of three primary schools in England. This paper reports on the results of the critical discourse analysis examining how children's agency is talked about (or silenced) in England's curriculum.