<p>Agree with Bluedog; that said, alumni interviews are notoriously variable in terms of their usefulness- interviewers are not vetted by the school (its more of an alumni-relations thing than an education for applicants) and may be more-or-less up to date with the place. Also, a lack-luster alum may turn you off to a good school. Still, you do want to come across as being interested.</p>