As watchers of my YouTube channel know, I’ve long seen assessments as one of the biggest barriers to moving toward a future in which all individuals can build their passions and fulfill their potential in a positive-sum, mastery-based education system. Arthur Vanderveen is CEO of New Meridian, which is helping to redefine assessments that are valid and reliable, bite-sized and can be taken as students learn, and can be aligned to the content on which they’re actually working so that they are helpful to students, teachers, and policymakers.