text: No, there have been plenty of research to suggest that this scale is not the only one that can measure brainpower and potential. They took 3 groups of students, the first had IQ - 100-120, the second 120-140 and the third 140-160 and they gave them some reading assignments. What they found was that in some of the cases, the group with lower IQ actually was able to do better (for example in questions that required some more of an accurate investigate thinking and not just individual intellect). What's interesting is that the IQ chart is not currently used by any educational institution as the basis for admission or any other privileges.