There are many adults who don't know those things.
Not every unschooler can get to a conference, or even find other unschoolers in person, but it's worth trying to meet some older unschoolers when a family is still trying to gain confidence.
"Unschooled Teens: How are they as people?"
Photo of the water bottle from the Albuquerque Live and Learn Conference,
in the window, in our bathroom in Albuquerque,
by Sandra, for the way the light shone through it.