A good interview coordinator will try to match interviewers and applicants such that student interviewers don't interview applicants from their undergrad institution. If an interviewer recognizes someone by name on the interview assignment sheet, that interviewer is supposed to notify the inteview coordinator and arrange a swap with another interviewer.
now that's more like it.
could you request another interview if you feel that your student interviewer is showing obvious biases towards you? or if you know the person interviewing YOU, and you know that the interviewer knows you, but the interviewer pretended to not know you and interviewed you anyway? that could be an awkward situation.
and the reason i am asking is because of a similar situation that happened with a high school friend. he had a great personality (evident in his ECs and LORs) along with competitive stats. he interviewed at a school that he loved, and where he fit the school's mission near 100%. in short, he is the poster child applicant that that school wants to have.
during his interview, he came across a student interviewer who happened to be a college peer, and they both knew each other. my friend didn't think much of it, and the interview with the student interviewer proceeded. my friend is an excellent communicator, and he interviewed extremely well with this student interviewer that he knew. in addition, his other interviews with faculty went equally well. however, he was waitlisted.
absolutely shocked, my friend contacted the adcom, who told him that while he is the perfect applicant for that particular school (and the word "perfect" was used), the decision to waitlist him was because of some comments made to the adcom by his student interviewer, that college peer who knew my friend. upon further inquiry, my friend found out that his student interviewer made grotesquely malicious comments about him that were entirely fabricated.
of course, there was some back and forth communication between my friend and the adcom, but at the end, my friend asked for (and received) another interview. he went to the school again (flying across the country), and was ultimately accepted with a full scholarship and a letter of apology from the dean of admissions.
my friend had some differing political viewpoints from his student interviewer (they both went to the same college and were one year within each other), and apparently, the interviewer wanted to "screw him over" on the interview.
i just hope that medical schools are at least aware of this possible situation and have mechanisms in place to prevent/alleviate such occurrences.