Writing as a Mode of Learning

What I understood of this article, I thought was very interesting. I find it fascinating that, of the four "languaging processes" that she discusses, writing is the only one in which the individual is charged with creating physical meaning. The significance of this is not to be overlooked, and it is precisely why being a good reader does not automatically make you a good writer (in the same way being a good listener does not make you a good talker--and vice versa). I also liked the analysis of both left and right brain action and the idea that writing is one of the original processes that uses both hemispheres.

However, though I agree with the argument of writing as a mode of learning, I am hard pressed to think of something I learned through writing. I think the typical educational mindset is that reading is for learning, and writing is for regurgitating, grading, and ranking. Along those lines, if the last article is also to be taken into account, if most students aren't even writing in the correct way, how are they expected to learn anything from it? I suppose it is a less concrete idea than I am making it out to be, however, I would appreciated a little more explanation on practical application from the author,