The opposite also happens. One of my best teachers ever was a community college lecturer teaching math. The man was a genius at overhead projector examples, with color coding, and multiple explanations of why common formula solving methods worked - from different viewpoints.
Sometimes community college instructors are actually better at actually than 4 year college professors. The community college instructors I had actually taught their own courses and were there as teachers not as publishing academics who sometimes had to teach a class. Granted, I’ve had good and bad teachers in both 2 year and 4 year colleges (and, at least once, the exact same teacher, moonlighting), but there seem to be some huge impediments to good instruction built in to graduate and post graduate academics.
