It was pretty atrocious, and fairly clear that she didn't come by the material cleanly, from the somewhat torturous way she taught it. I imagine if you'd had all the exact same stumbling blocks she did learning it, it might've been helpful, but for someone who figured out De Morgan's law in third grade, it was unnecessarily obfuscatory and unrelated to any reasonable applications. The whole time it was very clear that she was teaching something she personally had to learn by rote and didn't quite understand in fullness. I don't remember much about her grading, though, I was too caught up on her teaching.