Promoting high standards in education while striving for equal opportunities under the budget constraints - these are the new global objectives of education systems. This book brings together research-based evidence on the effectiveness of major Australian, Dutch, and UK improvement efforts in education at both primary and secondary level, whilst making comparisons with similar US initiatives. The book addresses several major questions in this new environment. Those questions include: how to combat educational disadvantages, how to integrate pupils with special educational needs in regular education, how to implement educational standards initiatives, how to restructure secondary education, how to implement decentralized policy-making, and how to implement a class size reduction initiative? Finally, the authors suggest directions for future research in order to increase our understanding of what works in education and why.