I've been wondering this myself, good thread! I'm not quite sure how the numbers work, so I will give Thor a B-. When I got him, he was a D+, so he's a hard working student!
I think he's pretty close to being potty trained, he doesn't bark indoors anymore and he knows Sit, Stay, Down, Come, Drop It, Shake, High Five, and Spin.
On the other hand he still tries to walk in front of me even though he's been corrected approximately 48,000 times. He's also much better at commands when he's going to get a treat. If I tell him to Sit before going outside, he'll stare at me like he's never heard me speak before. Then if I fish a treat out of my purse, I can actually hear his little butt thump on the ground.
