What is K-12? I’m assuming Kindergarten to 12 as in grade 12? That’s the US system right? You say you’ve never been to school in these grades. Are you saying that you didn’t do them because your country doesn’t use this system or have you just not done the equivalent of those grades at all?
I have been inside lots of trees, but I can’t think of anyone I know who has actually bothered to build or buy a treehouse