I would encourage you to look forward in her life. You have every right to ask them to evaluate her, but you should think beyond right now. Like what being the youngest will be like vs being the oldest. There is nothing wrong with letting her being ahead of classmates and giving her the confidence in life that comes with that. You say she is ahead of other kids, but how about maturity wise. You also have to realize that being ahead now and being ahead in 2 years when other kids catch up might not be the same thing. Those other children could actually even pass her and that means she would be behind of the older kids.
Personally, I wouldn't consider it until about the 2nd grade. If in 2nd grade, everything was too easy and she was getting trouble because of being bored then I would push testing her to be moved up. Being older in class has great benefits.(look ahead to getting her drivers license, dating, being 18) Our old school district actually offered a developemental 1st for younger children who werent behind but not ready for 2nd grade. Those kids were generally summer babies who were just turning 5 when kindergarten started. They evaluated them after this class and determined where they needed to be. Most were on track after that year of maturing.
If she is truly advanced she will have plenty of opportunities even in her appropriate grade to move at a faster pace. In High school most districts offer testing so that kids take more advance classes and some kids can even have at least the freshman year of credits under their belt before they graduate high school (if not even more).
I would sit back and let her have fun in kindergarten and first grade. Feel free to tell the teacher and get their input, but let her see how she grows. Kids grow at different rates ( I don't mean just physically but mentally as well) and the majority seem to catch up with each other at some point.
The faster you age them the faster they are out on their own and not your baby anymore! (that is the emotional "I don't want my kids to grow up mom" in me talking!)
Good luck