 In every math classroom, there's a reality where some of the kids start racing ahead, some of the kids are in the middle, and some of the kids are further behind, and in a traditional math class, you would call the ones that race ahead the advanced kids or the good kids and the ones that fall further behind, you would call them, well, I'd put them in a remedial class or a slower class. What we're finding is if you let every student work at their own pace, and this is kind of core to a lot of what we're about is the idea of students taking ownership of their learning, learning at their own pace. A lot of those students who you thought were slow or remedial, if you let them fill the gaps in their knowledge and really engage in the content in a way that they don't feel embarrassed, many of those students in one, two, three, six months can end up being, can catch up with the class and actually end up being one of the top students in the class, and we're seeing that over and over again.