As to GAI...with the processing speed I'd imagine GAI is a better indicator of overall academic success and intellectual ability. Ask your test if she/he will calculate GAI as well for you. Lower processing speed, from my understanding, is not unusual for young highly and profoundly gifted children.
My understanding is that VCI, and in particular working memory and processing indexes are important for success in a typical school. I certainly see this at home with my DS; he is intelligent but his deficits in executive function makes school and homework a challenge at times. Fortunately he is doing well now, but I worry about this impact as he gets older.
