"I think it's plausible that there's a few things going on that make you get along well with less school - one, I'm seeing some evidence that futzing with chakra all the time might make you better at processing and retaining information, so you might learn faster than baseline humans who don't do any of that, and two, your society is lower-tech and less connected, so there's less you need to know to not look like a dumbass on the internet since you don't have an internet and if you did it probably wouldn't have too many foreigners on it. Arguably, a lot of what those years cover isn't essential. People don't, like, die because they slept through Lusofone Theater 2050-Present, or anything. People don't fail to get a job because they mix up Trotsky and Lenin unless they're trying to get a job as a Russian history professor. I'd almost say the ballooning educational expectations are downstream of a healthier society - less conflict, fewer resources sunk into conflict - I'd attribute it to post-scarcity economics but this trend was already evident before that! - and what people do with that flexibility is they keep their kids safe and teach them lots of enriching stuff."