I'd go with the recommendation for pull out acceleration since there are many reasons why a score can be deflated. I doubt the school psychologist's testing was inflated.

http://www.nwea.org/support/details.aspx?content=1024
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On the other hand, any number of things can deflate a score. Fatigue, hunger, anger, boredom, or distraction can all have negative impacts on a student's performance. It is more likely that a score that doesn�t reflect a student�s true ability will be deflated than inflated.