The norm for classes in contemporary schools is the Cram-Pass-Forget cycle. Students cram for tests, pass them, then forget most of what they crammed in just a few weeks. Instead of cramming and forgetting, students should learn, master; and retain what they have learned. This workshop presents an overview of a tested and proven mastery-oriented approach to instruction. Examples will focus on science and math instruction, but the same principles can be applied to any subject.