but back when only the few were educated, America tried all.
If you "all" you mean "affluent white sons of landowners and merchants", only later including women, people of color, people who spoke another language, etc.
I mean, I agree with your basic premise that we've been doing the public education thing for a long time (there were sporadic instances in the colonial period), but we didn't have national basic public education until the 1870s, and what we established was based heavily on the Prussian
Volksschule system, already established from the 1840s. Germans have us beat by at least 30 years.
Wasn't until the early 20th century that public education was compulsory, and even then only through elementary school. Compulsory education through age 16 wasn't a thing until the 1960s, and the South lagged far behind other regions in requiring compulsory education (which makes some sense -- farmers want their kids plowing fields, not larning a bunch of gobbledygook like numbers and litterashure. The Good Book is good enough, and they'll larn the rest of it at the end of a switch)
@Folly: Good luck with that. Unless you have a formula for eco-friendly smart bombs and organic jet fuel, the militaries of the world are part of those factions you're talking about. I get what you're driving at, an "Alliance of the Earth" vs. "the Axis of Carbon" situation, but I just don't see how that possibly works given that militaries need heavy industry to support them, and the biggest polluters on the planet also tend to have some of the biggest militaries. You'd be more likely to see a series of civil wars in those pollution-heavy nations.