I think only you can decide for your daughter as you know her the best. In here people can tell you great stories and they can tell you horrible stories, but none have to be the case of your daughter, because she is not them after all na .. Personally I have tried all three parts.. being the youngest, being one of the oldest and being somewhere in the middle.. I prefer the last though. My sister on the other hand is/was the youngest in her class during pre-school time and now also in high school, but it has never really effected her, she thinks its great tht she is like 3 yrs younger than some of her classmates and yet equally as good in studies as them .. but then again she is very strong emotionally and has always been more of leader than a follower.