<p>Go to read this <a href="http://ben.mitblogs.com/archives/2006/03/its_more_than_a.html%5B/url%5D">http://ben.mitblogs.com/archives/2006/03/its_more_than_a.html</a></p>
<p>"First you apply. Your application is read by a senior staff member who will look for deal-breakers (like a bunch of D's, for example). Assuming you're competitive, your application is then read by a primary reader who will summarize it at length for the committee. Then a second reader (and sometimes a third) will read and write their own summaries. Then it will go to selection committee, where multiple groups of different admissions staff and faculty members will weigh in on it. Assuming you've made it that far, the senior staff will then review it again, and then finally Marilee will spend some time with it before it gets put definitively into the admit pile. Approximately 12 people (give or take) will significantly discuss and debate your application before you're admitted. This is all very intentional; committee decisions ensure that every decision is correct in the context of the overall applicant pool, and that no one individual's bias or preferences or familiarity with a given case has any chance of swaying a decision unfairly."</p>
<p>"Your grades and scores are clearly competitive or your application wouldn't be on my pile in the first place."</p>
<p>As long as you are making no C's, no D's, and a few B's (or not B's), I think you are fine.</p>