Most people could maybe name a handful of Greek organizations on the joint campuses of Columbia and Barnard, which puts Greek life at only a slightly better place than Columbia football. A few of the girls on campus that belong to sororities look the part, but mostly you can't tell who is who. It's not like other schools where certain "types" of girls join certain sororities. They all just kind of blend in by being equally unknown. There are more "I love New York" shirts on campus than Greek ones. In fact, the only way some people know that Barnard and Columbia even have a Greek system is Greek Week, which is a week in which all of the organizations get together and compete in games all over campus.
The best thing about Greek life on campus is their sorority and fraternity houses, which are nothing at all like the large traditional-looking houses you find at other schools. At Barnard and Columbia, Greek Row is on the south side of campus and is made up of brownstones, which is also a testament to their tiny size. The people who are involved in sororities and fraternities are very involved, but most people just don't join a Greek organization—partially because of the expense and also because you just don't hear how to go about getting in. Sure, if you really want to join a sorority for some reason, you'll be able to figure out what you have to do to pledge, but so few people are involved in Greek life here that you may not want to join, anyway.