We were homeschooled.
Not the "religious nut" kind of homeschooling though. I wasn't even aware that was a thing growing up. Our parents actually raised us totally atheist, so almost the opposite!
Personally I'm glad we were homeschooled, our parents actually did teach us well and we learned all the academic stuff you'd expect us to learn. (The state we grew up in also has a system of "you take yearly state-run standardized tests to make sure you're actually being taught stuff", which probably helps. But like, I don't think that was the only reason our parents taught us well, I'm pretty sure they actually cared, too.)
The downside of all that is that it helped our parents keep us isolated. But honestly, I'll take that over the bullying (and indoctrination) we've heard of public school having. Public school sounds like hell.
-- Frost