It's pretty interesting, and I wonder if it's because I have such a heavy tech and Silicon Valley bias, but 90% of the folks I talk to seriously about alternative education and homeschooling are dads. Homeschooling makes a lot of the moms I talk to very nervous.
The most common profile is someone who has had a successful tech career. A few have had a successful tech company exit.
I believe the most important role in society by far is the homeschooling mom. It is a privilege to be useful to them.
And yes, we are rapidly expanding what Synthesis teaches, and will go through 8th grade.