1. Introduction.- 2. Data-based Decision Making: an overview.- 3. Analysis and Discussion of Classroom and Achievement Data to Raise Student Achievement.- 4. From "Intuition"- to "Data"-Driven Decision Making in Dutch Secondary Schools?.- 5. Professional Attitudes to the Use of Data in England.- 6. Approaches to Effective Data Use: Does One Size Fit All?.- 7. Improving Data Literacy in Schools: Lessons from the School Feedback Project.- 8. Implementation of a Data Initiative in the NCLB era.- 9. Towards Data-informed Decisions: from ministry policy to school practice.- 10. Conclusions and a Data Use Framework.- 11. Data Use: Where to from here?.- Index.