Ping.
This ridiculous idea was very popular in the French enlightenment and to a lesser degree the British enlightenment, giving birth to the myth of "the noble savage." It was lampooned by Alexander Pope and other more realistic observers, but survives today in the rabbit warrens of gray ponytailed idiot children of the Left.
Not a schooling issue, but this collection of books may be intersting to homeschooling parents who want their children to learn about America’s founding from authentic sources.
“Was slavery immoral?”
In regards to the American Enlightenment, it depends on what part of the country you live in.
For most of America the answer is a resounding ‘yes’. But in San Francisco it is considered an alternative lifestyle and one practicing this is considered highly enlightened.