To qualify for Mensa, an individual must score at or above the 98th percentile on an approved intelligence test that has been standardized and normed, and approved by professional psychologists’ associations. The minimum accepted score on the Stanford–Binet is 132, while for the Cattell it is 148 and 130 in the Wechsler tests (WAIS, WISC) . However, the minimum accepted score may vary from country to country and from test to test. It is important to note that Mensa membership is not directly based on IQ score, but rather on the percentile ranking of the score.