Agreed. We all make judgements.
Just what struck us as weird that this seemed to be the defining characteristic for her assessment of the quality, viability, whatever of a person so that for instance, if my wife had answered a public school, it wouldn't have been a surprise if the woman stopped talking to us altogether.
So it seems the key is to at least recognize one's in-built and inevitable judgements, prejudices so to be aware of them when interacting with people and how those judgements/prejudices may unnecessarily and wrongly influence one's opinion of someone.