I'd like to see the documentary.
His thought process is skewed. One review of his books summed it up pretty well:
"Public schools are a mess. Kids graduate without learning anything other than how to be subservient worker bees. And half of all families end in divorce in this country, which shows how bad things have become.
Huh? Even if one is willing to accept the first two statements without a shred of statistical evidence, the last statement is completely unrelated to them."
He doesn't seem to use any real statistics or references, and he has the conspiracy theory attitude that schools were designed with evil intent by the Power Barons of the 1800s.
I don't doubt he was a great teacher. As a great teacher, he is in a place to offer real solutions instead of just pointing out the problems with the current system. Hell, there are tons of crappy teachers that can do the same.
There are so many great books written by teachers that offer real, practical advice on how education can be improved--both on a large scale over time and daily in the classroom. It's sad that such a "great teacher" doesn't share anything about what he actually did in the classroom to help his students.