im not even sure the average PERSON is smarter than 8th grade level.. so i certainly wouldnt go that far..
I think your "friend" is making alot of assumptions..
Most religious people i would think are being schooled, whereas the average earthling most likely isn't educated , certainly not 8th grade level educated..
I suppose it's all in what you mean by educated..
IQ is a strange test for evaluating how smart someone is.. ( even though thats what its there for )
i liketo come up with different scenario's to judge how "smart"someone is..
Toss 2 people n the woods with nothing but a knife , and see who makes it out..
Using my scenario , your friends opinion miht be right ;)