Coincidence?
I did most of my hiring when the current homeschooling movement was nascent but it would make sense. The best predictor of a good employee that I found was the quality of the parents. Concerned, engaged parents would be most likely to homeschool and most likely to have instilled a core of values in a child. Homeschooling would also mean that the child has less exposure to corrosive influences found in the public schools.