The Ivy League includes some of the most prestigious, selective, and highest-ranked colleges in the world. Known for extremely competitive admissions, the schools boast many famous and successful alumni. There are eight total colleges that are considered to be Ivy League. These schools are Brown, Harvard, Cornell, Princeton, Dartmouth, Yale, and Columbia universities and the University of Pennsylvania.Duke, MIT, and Stanford aren't Ivy League universities only because they didn't have strong athletic programs when the Ivy League was established.