A verbal IQ of 147 is more than a full standard deviation above the usual gifted cut off of two standard deviations above the mean. It falls into the "exceptionally gifted" range when you look at the breakdown on the Hoagies' Gifted site. This is higher than the "optimally gifted" range. I would look at the highest score to judge his level of need, because that area is what is going to be the driving force. There is a pretty big gap here between verbal and performance, which pulls down the FSIQ. This is not unusual, and not something I'd be too concerned with at this age, but it is something to watch as he gets older to make sure that it doesn't reflect actual visual or motor issues or an LD.