This document discusses using data to drive instruction and student learning. It emphasizes using multiple sources of student data, including standardized tests, observations, conversations and student work, to identify learning goals and diagnose student strengths and needs. The document also discusses tools like data disaggregation and student work analysis protocols to help teachers understand what students know and still need to learn in order to improve instruction. Finally, it provides information on the Common Core State Standards and 21st century skills emphasized by the Partnership for 21st Century Skills.