That's a relatively large discrepancy between VCI (144) and PRI (115). Did the evaluator share any thoughts re why there was a large gap - i.e. did he/she think the gap is real or did he/she think your ds was off-task or unfocused or tired during a PRI subtest and got a score that might not be representative of his true strengths? Have you noticed any issues or challenges with academics? What were his math scores and writing scores like on the WJ-III? And did the subtest scores on the WJ-III vary or were they consistent?
If his WJ-III scores are consistent and the evaluator thinks your ds was just not engaged and that negatively impacted the PRI score, I'd consider that if/when he tests again in the future he could get qualifying scores.
Also remember that you have to send the entire report in with the scores (I think... if I remember correctly!)... so if there's a note about the reason for the PRI dip that might help (I'm not speaking for Davidson... just thinking out loud... so take that with a huge grain of salt!).
Best wishes,
polarbear