I've been taking "classes" there for a while. I think the format of learning and the tests are, BAR NONE, the best in education right now. It's hands on and put forward in a simple way so you actually learn instead of remember.
I hope the entire education system is taking note of Sal and his work.
Tools of war are not always obvious. The worst weapon is an idea planted in the mind of man. Prejudices can kill, suspicion can destroy, and a thoughtless, frightened search for a scapegoat has an everlasting fallout all of its own.