And things like this, for IQ of 130:
Most of these children are a full two to five years beyond grade level by age six.
. I mean, really? To hear the teachers at our school tell it, it's very rare for a child to be more than one or possibly two years ahead in math at six, let alone for there to be a couple in each class who are doing fifth grade math.
This is pretty common in some elementary schools in some professional suburbs North of Dallas. Some have up to six kids per school > 99.9 on the MAP by 3rd grade and they are usually grouped together in the same class. A handful are scoring > 15 on the AMC8 in the 4th grade.
We have just been through this conversation with my son's school. The way they described it to us is that achievement is highly influenced by environment, but aptitude/intelligence is less so (while still influenced). For our son, his aptitude/intelligence was unlike anything they have ever seen, but that there are other schools in the city where there might have been students with his achievement levels and a lower aptitude.
I was shocked when we looked at the grade level standards for math for our state. Our son has some math skills at age 6 (kindergarten) that don't even get mentioned in the standards until middle school, but he has other areas that have never been introduced, so there are gaping holes. For example, telling time is a kindergarten standard. We never bothered to teach him to tell time, so he needed to learn it in kindergarten this year--even though he can add unlike fractions in his head.
