I should say know how instead of no how. LOL Of course, I wasn't home schooled, I'm a product of a publik education.
For the person that asked about when they will learn to do integral calculus...they will learn it if they have an interest and a need. I took Calculus in high school and higher math in college. Haven't used a bit of it.
I did use my probability theory when playing poker though. :) Those of us in the technology business are learning all the time.
As I said, children are natural explorers and learners. My understanding of unschooling isn't putting your kids in front of an XBOX all day. It's guiding your kids and teaching where you see their interests are. If you read to your kids, they'll want to learn to read. When they want to learn you guide, train, etc.