Matilda is completely obsessed by her school marks and isn’t spending enough time with Jim because of it. The boy tries to show her that you learn just as much at “corsair college” as you do at school: not only is it fun, they also teach you essential things, like looking for treasure or surviving in the wild! Matilda duly calms down in the revision department and her school marks improve accordingly. Now, everyone in the class wants to attend “corsair college”, just like her, and all the pupils start bunking off school! But the landlubbers’ obsession for good marks soon creeps up on them again, fired notably by an untameable urge to compete…