BG, your child did very well on all of the measures! I should note, though, that the WISC-IV has been superseded by the -V for three years, so these scores should be interpreted with a bit of caution. Also, there are no extended norms as of yet for the WISC-V, so the very high scores on the subtests of the QRI are as much normative information as we can obtain at this time, regardless of raw score.
The QRI (Quantitative Reasoning Index) is a measure of cognitive skills related to mathematical thinking and problem solving, and, in this case, suggests that your child would be expected to be exceptionally strong in mathematics development.
The combination of a 19 on similarities and the VCI you've reported suggests that skills in verbal knowledge may be somewhat lower than verbal reasoning. Does any IRL data bear this out?
