The past decade has seen think tanks operate in sophisticated ways to influence the development of education policies. In this paper, I reflect upon the influence of think tanks in the formation of national reform, using the Common Core State Standards initiative in the USA as an illustrative case. In doing so, I explore how certain think tanks, headed by political elites and backed by significant philanthropic funding, have sought to influence the reform initiative. My central argument is that meanings and practices associated with political publics are being transformed as elite policy actors gain influence. Through mobilising significant political and economic power, elites work through think tanks to influence policy debates, re-frame policy problems and advocate for particular policy solutions. The new public formations that are resulting appear to be shifting the conditions of possibility for policy making in education.