Then one day, on a forum unrelated to homescholling, I repeated the bit about how literacy rates used to be lots higher, before public school was instituted. I made an ass of myself. Yes, I have visited old ghost towns and seen the poor spelling conventions and other physical evidence of low general literacy. Yes, I used to be a history major and I know details like you used a pictorial sign for your tavern because so few people could read and that the purpose of church stained glass windows was to share some of the bible stories in pictorial form with the illiterate masses. I was taken in anyway, as are lots of very intelligent, educated folks.
Yes, I also know that there is a huge, important difference between a real education, which teaches you to think effectively, and mere training, which typically prepares you for a particular job. I have spoken of that many times. (FYI: "liberal arts" is designed to teach you to think. They are called that because they are supposed to be very freeing: If you can think effectively, you have much more genuine choice in life than the average person. Liberal Arts gets pissed on a lot as a really terrible thing to major in. And it may well be terrible, at a lot of schools. I don't really know. I think there is some truth to the idea that "90% of everything is crap".)
These days I find it questionable to quote anything by Gatto. The book was published with a hugely biased political agenda. The publishing house founder is a homeschooling crusader who would love to have public school abolished. For that matter, he would like to also have private school abolished. He would like homeschooling to be compulsory nationwide in the U.S. (if not globally).
That's a much more questionable agenda in my opinion than whatever agenda the powers that be had when they dreamed up public school.
(I homeschooled for many years. I think it can be a wonderful thing. But I see zero reason to believe that compulsory homeschooling would be inherently superior to what we do today. In the U.S. today, homeschoolers are generally rebels, defying the system in order to do right by their children. So they are typically very devoted parents. There is no reason to believe the excellence in education typical of homeschoolers today would remain the norm for homeschooling if it was the only avenue for getting a k-12 education.)