In this interview Michelle Rhee admits that teachers, great teachers anyway, are immeasurable. She also says that tons of standardized tests are a great way for parents to know, bi-weekly, how their kid is doing. She never mentions that parents can actually call teachers, visit the classroom their kid is in, schedule a meeting, look through their kid's backpack and see what is going on, or any other pro-active method of caring for your own child.
Oh, and she does some spinning of the investigation of her erasures, which can only be explained as cheating.