Nah. I was underdeveloped as a kid, or in my way of thinking, dumber. I couldn't read until second grade and always seemed to get the worst teachers, which kinda stunted my learning. I'm still trying to catch up on skills I should have learned in second grade! Therefore, I don't think skipping a grade would help or benefit me in any way, shape or form. Perhaps I could if I really tried, but right now, I'll stick to getting into honors english first.
However, good for you! It must be difficult being a the youngest in an older class full of unfamiliar faces. I couldn't imagine it. Personally, I think excelling at the level you're in is better than moving forward and being isolated from your peers rather than admired. It's difficult being ahead, not that I'd know, but I can see from some of my above-average classmates that being smart isn't always the best. My teacher actually talked about it today, about how we shouldn't pick on others for their intelligence or lack thereof. Hopefully you're doing well now, though!
(Trying to sound smart in a crowd of smart people here. I don't know if I actually sound smart or just like an over-achieving english student with too much time on her hands and pressure as she races to finish yet another procrastinated project.)