You have a good point with that bit about education.
I have found with first-timers that often it is illustrative to let them low ball and lose the first few places.
Its painful for them and its painful to see as an agent (and as a friend). However, I think it is a necessary evil. If they are making offers that are below what the market will bear or what they really are willing to value it at, then changing that behavior really has to be endogenous.
I never want to be the agent who pushes someone to offer more than they are comfortable with. Losing a place can help some buyers really take their own temp as far as their interest.