There is a fairly large spread of scores among the subtests, which isn't shocking in a three year old. In particular, the two subtests that comprise the VSI are 2 standard deviations apart. The two VCI subtests are closer, but still 1.3 SD apart. The main piece of perspective I would offer is that IQ scores are not all that stable before the age of 8 or 9, which means that they may go up, or even down (especially with children who were a bit hot-housed, or just come from an enriched environment, at the time of the first testing).
It is early yet to be concerned about her educational placement. Even if she is academically capable of skipping jk, one should also consider whether this would be developmentally-appropriate, socially, emotionally, and with regard to work skills. There are numerous discussions around the forum weighing these factors.
To your specific question about confidence intervals: it's about +/- six points for the FSIQ, which would indeed include the 98th %ile.
