During the past seven years or so we have been working closely with schools in East Anglia, North London, Yorkshire, Humberside, the East Midlands, as well as Iceland, Puerto Rico and South Africa on a school improvement and development project known as Improving the Quality of Education for All (IQEA). The overall aim of the project is to strengthen the schools' ability to provide quality education for all its pupils by building upon existing good practice. In so doing, we are also producing and evaluating a model of school development, and using the opportunity of collaboration with schools in the IQEA network to conduct a long-term investigation into the processes of school change and student achievement.