The night before the test the kid and I did some algebra word problems together. The kid was tired and really upset that he didn't understand every nuance of the problem set.
I told him to go to bed and get up and review when his mind was fresh. He was so sure he was going to do poorly. I bet him a "fancy dessert" that he would do 85% or better. He took the bet.
He woke up early, studied, watched a comedy video, then aced the quiz.
He sent me the picture from school via email -- yay technology!
I will update the internet about the fancy dessert soon.