haha you can call me professor when I finish my PhD! And Villette it took me 8 years to get my bachelor's degree so your son is on what my family calls the "Kim College Plan" 

 That was when I finally decided I liked school so I kept on and went to grad school!  
And there isn't cheating b/c I reorder the questions on all the exams so if they cheat the answers will be all wrong. And they are required to turn in the answer sheet AND exam, and I monitor that closely.  Otherwise yes, there would be a whole lot of buying and selling going on!  
Just handed out the exam to class #2 

 WOOHOO!!!!