Anthony Kelly is Professor of School Improvement and Political Economy and Director of Research in the School of Education, University of Southampton, UK.

Chris Downey is Lecturer in the School of Education, University of Southampton, UK.

1. Introduction Part I: The Past: Why Data is Used 2. The Journey from Raw to efined Measures of School Effectiveness 3. Pupil Attainment and Value-added Data Part II: The Present: How Data is Interpreted 4. The UK Government Value-added Model and RAISEonline 5. The Fischer Family Trust Models 6. Slopes, Intercepts and Differential Effectiveness 7. Getting More Value from Added-value Part III: The Future: Why Data is Important 8. Managing Effectiveness Data for School Improvement 9. Understanding Teacher Attitudes to Data Use 10. Developing and Utilising Non-cognitive Metrics 11. Developing and Utilising Non-cognitive Metrics 12. A Dissenting View: Challenging the Complexity of UK Measures Appendix 1. ACORN Deprivation Classification System Appendix 2. Factors Included in the FFT SX Model