Can Dewey's Moral Principles in Education throw light on a contemporary policy issue in education, namely the privatisation of education through the establishment of academy schools in England? The article first considers what the policy entails, in terms of its conception of education as a market commodity. The next section suggests an alternative conception, drawing particularly on Deweyan claims for the fundamentally normative and relational nature of teaching, through his definition of democracy as ‘a form of associated living’ and the school as a place for such association. The third section relates the two conceptions of education and in their light considers tensions and conflicts in the academisation policy concerning inclusion, equity and social cohesion. The article concludes that the establishment of academy schools compromises these values and constitutes a danger to the commons, that is, to socially consensual and equitable ways of being together.