This issue of R&D Alert focuses on a perennial challenge in education and human development: how to make the most of information, whether test results, research findings, or other data. What happens with all the data generated by testing students? How is it ensured that the information is accurate, relevant, and timely? How do the results translate into improvements in practice? This issue's contents include: (1) From the CEO: On Using Data to Drive Reform; (2) Using Data for Decision-Making: A Comprehensive Process for School Reform; (3) When Data Speak: English Learner Evaluation and Accountability Support; (4) Creating Accountability Systems for the Nation: Q&A with WestEd's Stanley Rabinowitz; (5) A Framework for the Future of Science Assessment; (6) A New Yardstick for Assessing Early Childhood Care; and (7) What's New & Useful: WestEd Products & Services.