Mastiff, I do not know the scale of the thing but most 'canned' IQ tests top out between 135 and 140 -- which is to say if you get an IQ above 130, you probably ceilinged the test and it can be seen as a 'floor' for your IQ, not at all an accurate assessment. That is a 'rule of thumb'. Past a certain IQ range, a canned test is meaningless and past a certain age it is also pretty meaningless. Profoundly gifted kids have to be assessed by age 7 or 8 and have to be assessed by a qualified assessor -- not merely 'take a test' -- in order to have any hope of getting an accurate assessment. Otherwise, their score is basically guaranteed to err on the low side.