 Other than a few sermons, all of Kilvington’s known works stem from his lectures at Oxford. None is written in the usual commentary fashion, following the order of books in the respective works of Aristotle. In accordance with the fourteenth-century Oxford practice, the number of topics discussed was reduced to certain central issues, which were fully developed with no more than ten questions in each set. The reduction in the range of topics is counterbalanced by deeper analysis in the questions chosen for treatment. Some of Kilvington’s questions cover fifteen folios, which in a modern edition yield about 120 pages. His philosophical works, the Sophismata and Quaestiones super libros De generatione et corruptione, composed before 1325, came from his lectures as a Bachelor of Arts; the Quaestiones super libros Physicorum (1325/26) and Quaestiones super libros Ethicorum (1326/32) date from his time as an Arts Master; after he advanced to the Faculty of Theology, he penned eight questions on Peter Lombard’s Sentences, composed before 1334.