Laura Blakeny now runs the school you mentioned, but it's a lot more expensive than what I am doing at this point. The class I'm taking is by David Rosenberg, also on the Iyengar site as a certified teacher. Sounds like there are no bad certified teachers.
Do you teach?
We had our first lesson this week. I'm hunting now for some printed instructions to remember the gist of the asanas we did. Would like to run some of them once before next Wednesday. I feel some minor cramps and muscle pains where I felt stretched a lot. Almost the sort of thing that would keep me off the bike for a day or so, hence I'm a little concerned. If I felt nothing, I'd want to practice them twice.