dahremarc,
Dottie might be able to tell whether the scores are calculated correctly.
Some organizations (such as Davidson�s) consider giftedness based on whether at least one of three scores (VCI, PRI or FSIQ) meet a certain threshold while others accept GAI. The WMI and PSI are not usually considered as important in determining gifted intelligence. So, a PRI of 135 does indicate gifted intelligence, although it is the less appreciated form, especially in a 2nd grade classroom.
I think you can get valid test results on the same test after just one year, so two years should be perfectly �legal�. If your son sounds like a 24 year old, his verbal score might reflect that attribute on the next assessment.