Just curious--how often do these kids exist? I feel like whenever I see the breakdowns of high-scoring kids, there is something low in there, usually processing speed or coding or some of the memory tasks, right? I wonder what a kid with all-around scores in the high 90s (but say, NOT all 99th...90th and up?) looks like?
I think you'd get as many answers to this as there are kids. I have two kids with all scores >98th and at least one index at the test ceiling of 155. Both learn well. Both learn fast. Both are very curious and motivated to learn. They are not the same in creativity, deep thinking, intellectual motivation, or capacity for intellectual work. They've required different educational paths.
I really see a big IQ as having big intellectual capacity but not implying much else. I think some big IQ kids are social butterflies and into many different activities and having oodles of friends and others struggle to make themselves understood well by others. Some crave college work very early and others want to stay with age peers. So many things depend on personality and drive.