What works in education? How do we know? How can teachers find out? How can educational research find its way into the classroom? How can we apply it to help our individual students? Questions like these arise in most schools, and busy educators often don't have time to find the answers. Robert J. Marzano, Debra J. Pickering, and Jane E. Pollock have examined decades of research findings to distill the results into nine broad teaching strategies that have positive effects on student learning.