All liberal bastions.
None graduate literate students on whole.
They can spout liberal ideologies, but I’ve have run-ins with each of those schools, attended three of them, and found the idiocy rates fare higher than the literacy rates.
Caltech, at least in the 1980’s, was apolitical, and hardly a liberal bastion. Can’t say that for certain now.
MIT is not really a liberal bastion, although there are plenty of noisy liberals there.
It’s probably the most conservative college in Boston (not that that is saying much).