Generative AI and the Assessment Equivalent of Bloom’s 2 Sigma Problem

Since the advent of ChatGPT it seems like everyone is talking about Bloom’s 2 sigma problem. The quick version is this: the average student who is taught using a combination of (1) one-on-one (or small group) tutoring and (2) mastery learning performs about two standard deviations better then the average student taught in a typical classroom setting. The “problem” in Bloom’s 2 sigma problem is that, while we know that this dramatic improvement in student learning is possible, we don’t know how to implement it at scale. We can barely afford one instructor for 30 students – there’s no way... [Read more...]