What does it mean to be a successful learner or graduate in today’s world? While in years past, a solid acquisition of the “three Rs” (reading, writing, and arithmetic) and mastery in the core academic subjects may have been the measure of attainment, the world of the 21st century requires a radically different orientation. To participate effectively in the increasingly complex societies and globalized economy that characterize today’s world, students need to think critically, communicate effectively, collaborate with diverse peers, solve complex problems, adopt a global mindset, and engage with information and communications technologies, to name but just a few requirements. The new report from Brookings, “Education system alignment for 21st century skills: Focus on assessment,” illuminates this imperative in depth.