I couldn't help but think of the tendency I've heard about for some teachers to provide "opportunities" for gifted kids to teach and act as mentors to other students, when DS9 told me that his teacher said that "the best way to learn something is to teach it." She even used gesticulation to show that listening accounts for a small part of learning, reading another part, I can't remember the third (maybe discussing/explaining), but teaching was the biggest. We talked about what she probably meant, how teaching can solidify what you have learned. It's just one of those things that annoyed me, and I needed some sympathy, ha.