Ivy League Group Agreement to all intercollegiate sports, effective with the 1955–56 basketball season. This is generally reckoned as the formal formation of the Ivy League. As part of the transition, Brown, the only Ivy that hadn't joined the EIBL, did so for the 1954–55 season. A year later, the Ivy League absorbed the EIBL. The Ivy League claims the EIBL's history as its own. Through the EIBL, it is the oldest basketball conference in Division I. As late as the 1960s many of the Ivy League universities' undergraduate programs remained open only to men, with Cornell the only one to have
Ivy League of the Northeast, Old Money, or more generally, the American upper middle and upper classes. Although most Ivy League students come from upper middle- and upper-class families, the student body has become increasingly more economically and ethnically diverse. The universities provide significant financial aid to help increase the enrollment of lower income and middle class students. Several reports suggest, however, that the proportion of students from less-affluent families remains low. Phrases such as "Ivy League snobbery" are ubiquitous in nonfiction and fiction writing of the early and mid-twentieth century. A Louis Auchincloss character dreads "the aridity of snobbery which he