School-to-school collaboration has been central to many improvement efforts over recent decades. In an attempt to promote both improvement and equity current developments in England have included changing formal governance arrangements to promote collaboration for improvement through "federations" and "chains" of schools.…

Although the number and size of academy chains in England is still increasing, the implications of these arrangements at a local level remain under-researched. This article reports findings from a comparative case study focusing on governance arrangements and sponsor involvement in two chains of academies. The findings suggest that the policy and…