Wait, but I don't think there will even be "knight missions" judging from the interview. I expect the knight school could be a place to learn new skills as people have said before, but tons of side quests that are coming from the same place seems un-zelda like, or maybe I'm just too new to the series.
Kind of like in MC with the man that taught you moves. But I think you will have missions, to different places in Skyloft. They probably won't have any major effects on the story, just extra skills and side quests.