How exactly does your ivy league have any relevance? Anyways, maybe 1 in 7 of my teachers were great people and I appreciate them immensely, but I had so, so many bad teachers. I had several teachers who would throw on vaguely relevant tv every class instead of teaching. Overall, most of them didn’t seem interested in teaching us, nor did they seem very informed outside of the class material. I don’t think they’re terrible people or something, just components of a terrible and underfunded system, but I also don’t trust their opinions on the future of teaching.
It's a quality signal. Not all my teachers were good and the system is underfunded, but most of turn cared about the students and I'm incredibly thankful for the education they gave me. I trust the opinions of people teaching kids everyday a lot more than I trust the average hacker news comment.