We already hafta learn more lore, and now we are supposed to think up new ways to make it profitable to be in a teacher, student relationship? Ick... this bodes ill for us my fellow hermits.
Possible Rewards that have been suggested are a boost to both teaching and the skill being taught, a few more TDPs when your teaching, maybe an addition spell per circle when it comes time. Both parties would benefit, how could there be an ill boding? Ponder