text: what does a 122 iq score mean?   the average iq is by definition 100; scores above 100 indicate a higher than average iq and scores below 100 indicate a lower that average iq. theoretically, scores can range any amount below or above 100, but in practice they do not meaningfully go much below 50 or above 150.  half of the population have iq’s of between 90 and 110, while 25% have higher iq’s and 25% have lower iq’s:  descriptive classifications of intelligence quotients     iq                  description            % of population  130+            very superior                   2.2%  120-129       superior                           6.7%  110-119        high average                 16.1%  90-109          average                           50%  80-89            low average                   16.1%  70-79            borderline                        6.7%  below 70       extremely low                 2.2%   score                   job 140       top civil servants; professors and research scientists.  130        physicians and surgeons; lawyers; engineers (civil                      and mechanical)  120         school teachers; pharmacists; accountants; nurses;                       stenographers; managers.  110        foremen; clerks; telephone operators; salesmen;                          policemen; electricians.  100+       machine operators; shopkeepers; butchers; welders;                         sheet metal workers.  100-        warehousemen; carpenters; cooks and bakers;                        small farmers; truck and van drivers.  90            laborers; gardeners; upholsterers; farmhands;                          miners; factory packers and sorters.