Good chapter, I like the discussion about light/dark magic and what makes them what they are, I don't think I have seen that assimilation with destroy/build before and I find it more interesting than canon.
But I don't think the story has progressed much in this chapter, there is not much time between the two last chapters, perhaps you could haste it a bit.
On another point, will the other teachers or even Dumbledore ask Harry about his teaching of light/dark ? What will they think of it ?
Finally, I would like to congrulate you for on your story and let you know that I will continue to read it and, I hope, like it.
P.S. : Sorry if I made grammar mistakes, but I'm french, so english isn't my native language ^^.
No problem with your grammar, English is my native language but I still stumble a bit. Thanks for the review. BJH