Another thing that will teach you some practical electronics basics without too much preliminary math or physics is a Ham Radio class. These are oriented to learning enough to pass the radio license exams...
Anyway, my main concern was that they would dumb down the material.
my main concern was that they would dumb down the material.
This is good to read that. You have mentioned all the courses about this. In this studies law's are so important to understands.
As people have mentioned, for just hooking up Arduinos you only need to know the basics, like voltage, current, loading, grounding, Ohm's Law, a little bit about capacitors charging, etc, but the OP expressed an interest in getting a real education, only he knows why :-).