I took an Econ 101 in undergrad. I barely remember it. I’ve gathered a bias to assume >50% of university level Econ courses in the US (and maybe Western Countries) have Keynesian derivations instead.

Regardless of their phrasing and claims, they’re still not much more than theories if they’re not backed up by massive and thorough multi-decade case studies. At the depth of community-level prices connected with regional, state, country level, etc.