Look at your schedule, because sororities or fraternities require a large time commitment. You can expect to spend a minimum of five hours per week for organizational involvement, and more during pledging the first semester you join. Activities often take place on weekends or over semester breaks. Consider what other groups you are involved in, look at your class load and decide if you can put the time into Greek life.
Consider your budget. While the amount varies, almost all Greek organizations have dues that must be paid each semester, plus additional fees for some activities. Ask a sister or brother for the financial information of the specific chapter you're interested in and look at your budget closely.
Meet the brothers or sisters. It goes without saying that you'll be spending a considerable amount of time with your new "siblings." Spend some time around the people involved in the organization and make sure it is a good fit for you; if not, consider another Greek organization. The best time to do this is during rush week, when all the houses host activities for potential new members.
Research each chapter's reputation. An important part of the Greek system is showing pride in your house and your letters. Research the organizations you're interested in and make sure they have a reputation you can be proud of and will want to put on your resume for years to come.