This article considers children's agency within the framework of children's rights education. It starts by considering the ways in which agency is conceptualised within the UN Convention on the Rights of the Child (CRC) and the implications for education. The main part of the article offers 10 propositions that offer teachers a variety of tools for thinking about what children's agency means and what they can consciously do to develop it. The article suggests that teachers can plan to develop agency through their curriculum, through the relationships they establish, and through the wider life of the school.