every german shepherd I have met is great with kids. We had owned one since she was four, and she was fantastic with our daughter and the neighbor kids. Don't let their reputation fool you, I would recommend a german shepherd to all families. They are truely glorious dogs.
however, from what i have read on the internet this is not always true and depends on whether the breeder knew what they were doing rather than just trying to make money and also on how well you socialize your dog. i have known many german shepherds and every one i have met has been great with children--including the one i have now with our three kids, but i would be a little wary anyway.