Sure, homeschooling is a lot of work, especially for the mother, but it doesn't compare with the work needed to effectively deprogram a child who is not homeschooled
Do the math. If a child is subject to the current atheistic indoctrination that passes for education in the government schools for six hours a day, how many hours would his or her parents have to spend to undo that influence? And, even if it were possible, are there really Christian parents who go through such an exercise? Again, I'm just too lazy to do so.