The story seems to be coming along ok, but there doesn't seem to be much conflict in it. Or is the conflict more personal? The inner conflict of love and perceived reality (Harry and Hermione know they love the other, reality (they don't think that the other loves them the same way) versus reality (the love on both sides is returned in equal measure).
That being said, I agree with DrT, there must be more to the classes than that.
Overall, though, keep up the good work and update soon. :)