The ancient law school about which we have the most information was at Beirut. Editors of legal papyri have occasionally speculated about possible connections between particular ancient texts and the activities of professors of law in that city, but no one has examined the evidence in a body. It is likely, I think, that legal papyri reflect the state of contemporary legal education at Beirut, and that they preserve, moreover, primary evidence for the history of scholarship in general. With so broad a topic, it would be useful first to consider what we know about legal instruction in antiquity, particularly at Beirut, then to review the relevant papyrological evidence, and finally to draw the two subjects together by considering the possible relation between the marginal commentaries of legal papyri and the extensive scholia which fill the broad margins of many medieval manuscripts.