i only say this because i just went through two months of firm interviews, and pretty much all of the harvard law grad interviewers made a point of mentioning the name of their law school at some point during the conversation, definitely not so much with other schools
i think it's just that harvard has so much "layperson" cred that they're kind of conditioned into mentioning the name in all sorts of situations ... big difference between, say, university of pennsylvania, which many people may confuse with penn state, or even NYU ... i guess the same thing works with MIT, but the friend i have from there is a pretty humble guy, definitely embarrassed when it comes up