This article examines the participation of "third-sector" organisations in public education in England. These organisations act as a cross-sectoral policy network made up of new kinds of policy experts: mediators and brokers with entrepreneurial careers in ideas. They have sought to make education reform thinkable, intelligible and practicable in terms of a computational discourse consisting of code, networks, interactivity and feedback, and related ideas of decentralisation, open methods and personalisation. What characterises this style of thinking is an "anti-political" preoccupation with computer-coded systems and the idea of networks as a model for new political and educational forms.