I had a colleague look into this once -- basically, see if it was possible to transfer from the company's consulting department to the education department. He was very interested (and I was mildly interested). At minimum, it would have taken a paycut of half.
And this is going to teaching in a corporate environment. I would think the paycut would be worse to actually go into teaching in the public sector.
I only wondered because you guys basically have to enjoy teaching somewhat or you wouldn't be on these forums everyday. I was curious how many of you would have wound up teaching at perhaps the college level in the field if given the opportunity with proper compensation.