This is very nice.
For those of you confused about how Diplomacy and English class get along, I believe that Diplomacy can cause people to empathize and think about a certain situation or event from another perspective other than their own. Diplomacy requires the diplomat to persuade, to comtemplate, and to analyze. Analyze the action of the board (my ally is probably going to stab me, I see that Italy will stab Turkey, and I can capitalize on that, etc), and to analyze people (She'll never help me after I stabbed her, He should be rational enough to see the good in working together, etc).
Diplomacy has a bunch of really nice traits besides betrayal and winning. Diplomacy teaches the importance of thinking about how your words and decision affect others and affect the big picture, thinking about long term goals and not short term gains, and thinking about how others actually see your decisions. Plus, Classic and other variant maps help in History and Geography a bit. This is my opinion, at least.