I am homeschooled as well. Every cuber I am good friends with is homeschooled(that I know of) Maybe homeschoolers get bored more easily and try things like solving Rubik's cubes?
my class which is at public school only has three cubers because we are the big brain program. I think we get bored to because we so smart and @goidlon is also a cuber in the same class as me.