Consider whether you will have the time to participate in "rush." You will have to take part in a pledge period before you become a full-fledged member and you will lose study time.
Determine whether you like to do things in large groups rather than small. Greeks have a very busy social life that is primarily limited to interactions with other Greek houses and determined by the house.
Consider whether you enjoy close, same-sex living: Greek houses are not co-ed. In some sororities, males are not allowed above the first floor. Some houses have sleeping "porches" that hold as many as 30 members. Closets and bathrooms are in another part of the house.
Decide whether you want to do mandatory chores and housekeeping. Greeks sometimes save money by not hiring housekeepers, but they often have cooks who prepare meals.