While unschooling is considered, for the purpose of the law, to be a form of
homeschooling, radical unschooling is not a method of education. Its an approach
to living with children in partnership, as if school did not exist.
The phrase that helped make unschooling really click for me was a similar quote I first heard from Ned Vare: Unschooling is living your life as if school didn't exist. That helped me drop any expectations I had about grade level, who should learn what by when... it helped trip me over into living more authentically with the boys, more in the moment.
There are so many more aspects of unschooling, of course, but I wanted to pull that quote out and save it.