Lots of good writing on the science of learning is coming out now and it’s needed. For too long we have known too little about learning—I won’t digress into the reasons why. We need to take advantage of this opportunity to learn more about this science. Here’s a case in point. Most students (about 80% according to survey data) “study” text and other assigned reading materials by rereading them. Yes, I know. It’s a huge struggle to get some students to do any reading. We have addressed that problem here previously and you’ll find another good way to get students reading in the June/July issue of The Teaching Professor newsletter. But for this post, let’s consider those students who’ve done the reading and are now “studying” it to prepare for an exam. Most students do that by simply rereading the material.