There's a learning curve that I see with unschooled kids and that is that they seem to be ahead [of their peers in school] for the first few years and then there's a period of time, roughly from about nine to 12 years of age, when they can seem behind. And then after they are 12 or 13, zoom! They look ahead! They seem to be ahead again.
If families can make it through that rough hump of "Oh, my kid doesn't know anything. He doesn't have cursive, he doesn't know the times tables and he's 12 and starting to get whiskers,"... Because it's just before a lot of the kids in school are saying, "This is crazy. Why am I doing this?"
photo by Amber Ivey
The quotes above are the beginning and end of something longer that's here:
The Learning Curve of Unschoolers