My daughter's rates are 1:14 for breakfast and dinner and 1:13 for lunch. She is about 80 pounds and turning 11 very soon!
Well, I think it's a function of age, time since dx, and overall insulin requirement ... but that said this 12 year old is an a 1:11 ratio
Dd is 11 and her ratios are: First meal of the day 1:9.5, 1:17 for almost everything else, except after 9 pm is 1:19.