An intelligence quotient score over 140 is considered to signify a high level of intelligence. An IQ score over 160 is considered to be a genius-level intellect. The average IQ score is 100.
While they are not reported very often, some people have scored an IQ of more than 200. These people are considered those who have an immeasurable genius.
Understanding what a good IQ score is really depends on the definition of "good." Some people might believe that simply attaining a score that is around 100 is perfectly acceptable, while others believe only high IQ scores are good scores.