I have never been present at an IQ test adminstration although I have probably lost count of the number of tests, both by schools and by medical centers/hospitals over the last decade. None of the psychologists with whom I am familiar allows parents to be present. This was true even during the one test where DS was fairly fresh from the rehab hospital and accidentally banged his head halfway through testing. I think the tester might have been ready to make an exception but DS was much better after they found him a room to nap.