Tough call. Personally, I wish I'd been allowed to graduate early from high school, but oh well. My daughter has an early Sept. b'day, and the local school district said NO WAY can she start 1st grade. Her pre-school kindergarten teachers and headmistress said she'd be bored out of her skull. We opted to bite the financial bullet and put her in a Montessori school, where she was the youngest in her 3-grade classroom. She thrived, was allowed to go as fast as she wanted (with mastery of course) and was nurtured socially as well. Don't know if this is an option for you, but food for thought. Daughter is now 11 (just turned), in the 6th grade at a public middle school (shudder) and adjusted quite well. We made the transition to public school in 4th grade, where she was placed in GT (gifted/talented) immediately. It was only a one day/week pull out program, but she lived for that day. You'll make a wise decision for your kiddo, and remember that you are her best teacher. Good luck.