Not Casey, who at age 6 is as tall as some 10 year olds and as gentle as some one year olds. I don't know. Learning, which is vastly different from being taught, is a lifelong skill that should be done for its own sake, not to please a teacher, pass a test, or be average. Casey will excel in what is important in his life, simply because the drive to do so is already in place. He will have the benefit of discovering for himself in his early years what he wants to do in his life without the inconvenience of studying, that which is unimportant to him.
Disadvantages are few and mostly personal.
Yes, I'm tired. Yes, I would love to have a few free hours a day all to myself. Yes, my not working full time required a little adjustment in our standard of living. Yes, I have a hard time keeping up with his energized and wildly creative thoughts. I am aware of the disadvantages but unconcerned about them.