Dress in professional attire, particularly in darker, more conservative colors. Make sure, however, that you will be comfortable in what you wear. A graduate school interview can last all day.
Bring a copy of the materials you submitted for your application, including your GRE scores, transcripts and purpose statement.
Articulate your reasons for applying to the graduate program. For example, have reasons that relate to the faculty, the courses offered and the available research opportunities.
Mention some of the research being conducted by the current faculty. Pinpoint a few key people who are doing work that interests you.
Convey pride when discussing your experiences and accomplishments. This is not the time to be overly humble about what you have done.
Not everyone you meet will know how to conduct a proper interview. For instance, upper-level administrators or graduate students may ask strange or inappropriate questions. Keep your cool and be prepared for just about any type of question.
Send a thank-you note to each person you talked with. This gesture can help to further illustrate your interest in the program.