In my grandsons gifted class the girls outnumber the boys 2 to 1.
To be identified as gifted in our school, they generally use a nationally normed achievement test. This is one of the ways our state mandates identification of the gifted. The state and our school will accept other testing, such as IQ testing. I would not be surprised to find that girls achieve at a higher rate compared to boys in the elementary years. Without some intervention for the boys, I can see them falling through the cracks and being identified as 'ADD' instead of gifted.