Review from a student who took M 427K
She's the most scatterbrained teacher I know. She'll start explaining something and then go off on a tangent. Besides that, she's nice and compared to how difficult the material she teaches seems to be, her tests are pretty easy. However, I had an awesome TA so I would only go to class to turn in hw and then only go to the TA sessions. Make sure you go to her review sessions the class before the tests, because you'll get a grasp of what will be on it. Grading wise, she has a nice system: there are 3 tests each worth 25%, homework worth 25% and a final worth 50% so you can pick and choose what you want to do to make up for the 100% (for example, you can do the 3 tests, hw, and skip out on the final).