That's exactly what my sisters have done. Their kids are not in public school, and their standardized test scores show that they're much better for it. My 13 year old niece will be studying 9th grade material this year. And no, she's not sheltered and completely anti-social. She has a facebook page and sends I don't know how many text messages per day. My 5-year-old nethew can read stories about puppies and tell you what he's reading about. Most 5 year olds in public school are finally learning that there is such a thing as an alphabet.