My very first plane ride was from Portland, OR to Los Angeles, as I flew home from Reed for the holiday break.
To the OP, here’s a link to some information on the Reed website indicating that Reed has among the highest percentages of its graduates who go on to earn PhD’s. https://www.reed.edu/ir/phd.html And this has been true for many decades: https://www.reed.edu/ir/phdrank.html
I agree with the similarity between UChicago and Reed with respect to the intellectual orientation of the two student bodies. But I think Reed’s is somewhat more intense. (My son attended UChicago.)