Could the names of badges be made Japanese? For example, student could be gakusei, and teacher could be sensei.
Badges are meant to be an optional incentive, rather than something serious like reputation:
The badges a user has earned don't have any effect on the site, they are simply a sign of accomplishment and bragging rights. The user's abilities are governed not by badges, but by reputation.
and giving it a different name on this Stack Exchange would provide more incentive by making it less generic and more special and unique.