Over the last 20 years, international attempts to raise educational standards and improve opportunities for all children have accelerated and proliferated. This has generated a state of constant change and an unrelenting flood of initiatives, changes and reforms that need to be 'implemented' by schools. In response to this, a great deal of attention has been given to evaluating 'how well' policies are realised in practice – implemented. Stephen Ball discusses how schools actually deal with these policy demands.