With roots in student-centered pedagogies that go back at least to the 1900s, personalized learning meets students' learning goals, needs, context, and pace while incorporating their interests and preferences. Personalized learning in today's classroom depends upon and creates an abundance of rich student data, which simultaneously fosters new opportunities for learning and creates fresh concerns over student data privacy. In this report, the authors argue that good student data privacy policies recognize the potential for personalized learning to accelerate student achievement while also guaranteeing safe, secure access to a predetermined, transparent set of student data. To advance personalized learning, state policymakers need to develop laws and policies that avoid key pitfalls that can hamper the efficient, effective use of data by school leaders, teachers, parents, and students. The report recommends actions state boards can take to foster personalized learning and data protection.