This major work captures cutting-edge and seminal practice from around the world in quantitative research in education, as well as looking back at some of the classic papers that have changed the way we work forever. It encompasses innovations in secondary analysis, surveys, experiments, statistical modeling, and sampling over thirty years. It showcases the methodological side of such innovations alongside reports of substantive results of great significance for educational policy and practice that emerge when using them. The articles included combine a good range of methodological approaches presented by a strong mix of top-name authors from around the world. Education research remains at the top of the academic and political agenda of most countries in the world, and quantitative approaches, both in isolation and mixed with other methods, provide the greatest promise of improvement in effectiveness, efficiency, and equity. This is an invaluable research resource for academic and graduates in this field. It will change the way you think about quantitative methods.