Since the premise is Zeus put a bunch of gods into jamjar school to learn humanity or else they're stuck there forever, you can adjust it from Zeus grabbing characters and force them to attend school to learn about [important topic] if they want to return home (aka graduation). Since it's run by gods, their understanding of human school culture and events may be a little off.
Re: Canons that are like jamjars and maybe should be Jamar games here on dwrp
Since the premise is Zeus put a bunch of gods into jamjar school to learn humanity or else they're stuck there forever, you can adjust it from Zeus grabbing characters and force them to attend school to learn about [important topic] if they want to return home (aka graduation). Since it's run by gods, their understanding of human school culture and events may be a little off.