I own a homeschool bookstore and meet hundreds of homeschoolers each month. My observations are that families who start out homeschooling just one kid usually end up homeschooling them all by the next year.
I think the main reason is that it's very challenging to straddle two worlds. It's often a matter of scheduling. For example, the weather is perfect for an educational trip to the zoo-- but, you can't because you have to pick up your other children at 3.
Even more common is that once you get into the swing of homeschooling, the public school world just starts getting more and more annoying. You find yourself less and less tolerant of unneccessay homework assignments, confusing projects, mean teachers, social pettiness, etc.
But, lots of families do homeschool just one kid and make it work for them. If your daughter loves public school and doesn't want to homeschool, then it shouldn't be an issue. If she *wants* to homeschool... well, that will make life a lot more challenging!
