There are a plethora of missions to choose from. The more difficult the better the ranking. High risk High reward.
In the 1st month of the school year there is a Class President election to give each class a singular face. this president takes all the responsibilities of class.
In the last month of the School year the School freezes the Point system and hosts a Tournament for every class to give them a chance see how far they've improved and could even change their rankings by eliminating other Classes. The results of the Tournament become the new rankings on the point system.