My son recently took the Wisc. When the tester gave me the results, she first quipped, "well you didn't prep him, like so many of the parents who come through here." At first I thought she was joking, but she was dead serious and my jaw dropped when she recounted how often it happens.
Our tester said the same thing. She said it's incredibly common for kids to have seen the test, not just been prepped (in her experience they were sourced through relatives or friends on friends who are psychologists). At dd's previous school (a top performing public school) the principal was very wary of IQ tests because he'd seen so many psych comments noting it appeared the kid had been prepped and in some cases parents had submitted doctored test results!! How any parent could think this kind of approach will be of any benefit for their kid is beyond me. The flow on effect was this principal doubted everything we said and it was eventually clear we weren't going to get anywhere so we left.
