Some people will completely change the way they converse once they find out you have X status marker. A famous elite university is one of those markers that triggers a good number of them.
For example, they will instantly switch from friendly to standoffish, or they will redirect the whole conversation to be about this new information, or will start treating their interlocutor as a superior, or asking for some advice/help, or...
It’s not clear whether they have some insecurity about their own education, or just curiosity, or what, but it can be a real drag.
A different group consider themselves to be similarly elite, and will also completely change their conversation when they find another of their tribe, e.g. start talking about how much better “we” are than those rabble in a clubby way. This can also be super annoying.
I assume something similar happens when people find out you are rich, or
won a prize, or have famous friends, etc., but “where did you go to
school?” is a more common ice breaker than “how fat is your savings
account?”
Deflection can save a lot of trouble.