Actually, it's not quite as simple as has been portrayed above. There is a table for calculating the FSIQ on the WISC-V, and it doesn't equate quite as easily to the mean of the Index scores. In addition to updated norms, the WISC-V is somewhat different from the WISC-IV on several levels (5 indices vs 4, different weighting of cognitive areas, different tasks feeding into the indices, etc.). With regard to the FSIQ, there is a notable difference that arises from the inclusion of only 7 subtests, rather than the 10 used for calculation of the 5 primary index scores.
Based on the mean index score you report, you may wish to seek further clarification from the professional who completed the evaluation, as that range is likely to be out of the experience of most of the posters on this forum.
pm'd you.
