100 is exactly average, 110 is above average, (but not genius like a krelboyne) 95 is slightly below average and 85 is below average (but not retarded. Mental retardation is 70 and below)
140 and over Genius or near genius
120-140 Very superior intelligence
110-120 Superior intelligence
90-110 Normal or average intelligence
80-90 Dullness
70-80 Borderline deficiency
Below 70 Definite feeble-mindedness