The second edition of the Handbook of Education Policy Research-the largest volume published in AERA's history-addresses a variety of policy and contextual issues in early childhood, K-12, and postsecondary education that have received extensive empirical attention during the past 15 years. With the pandemic and social turmoil as a backdrop, the editors build on the breadth and depth of the first edition while expanding the scope of the project to include subjects, methods, theories, and analyses that have contributed powerfully to the study of education policy and politics in the 2010s and 2020s. The field has become more comprehensive and inclusive, and the authors represent a diversity of racial/ethnic and gender identities and intellectual and disciplinary orientations. Most chapters come from multiple authors, reflecting the multi-sourced development of research in education policy since the first volume was published. This compilation consists of 70 chapters and nine commentaries that map past, present, and future directions of the field and richly attend to critical issues of interest to students, researchers, policy makers, and practitioners.