The third-oldest college in the United States is small and, to borrow a word from the headline of a recent positive article about it in The Chronicle of Higher Education, “weird.” Founded in 1696 as King William’s School, St. John’s College in Annapolis has since 1937 provided its undergraduates, all of whom study Ancient Greek and are working toward a BA in liberal arts, with a University of Chicago–inspired curriculum in the great books that e…