Table 1 - Practical Significance of IQ
IQ Range
Frequency
Cumulative
Frequency
Typical Educability
Employment
Options
Below 30
>1% >1% below 30 Illiterate Unemployable. Institutionalized.
30 to 50
>1%? >1% below 50 1st-Grade to 3rd-Grade Simple, non-critical household chores.
50 to 60
~1%? 1.5% below 60 3rd-Grade to 6th-grade Very simple tasks, close supervision.
60 to 74
3.5%? 5% below 74 6th-Grade to 8th-Grade "Slow, simple, supervised."
74 to 89
20% 25% below 89 8th-Grade to 12th-Grade Assembler, food service, nurse's aide
89 to 100
25% 50% below 100 8th-Grade to 1-2 years of College. Clerk, teller, Walmart
100 to 111
50% 1 in 2 above 100 12th-Grade to College Degree Police officer, machinist, sales
111 to 120
15% 1 in 4 above 111 College to Master's Level Manager, teacher, accountant
120 to 125
5% 11 in 10above 120 College to Non-Technical Ph. D.'s. Manager, professor, accountant
125 to 132
3% 1 in 20 above 125 Any Ph. D. at 3rd-Tier Schools Attorney, editor, executive.
132 to 137
1% 1 in 50 above 132 No limitations. Eminent professor, editor
137 to 150
0.9% 1 in 100 above 137 No limitations. Leading math, physics professor
150 to 160
0.1% 1 in 1,100 above 150 No limitations Lincoln, Copernicus, Jefferson
160 to 174
0.01% 1 in 11,000 above 160 No limitations Descartes, Einstein, Spinoza
174 to 200
0.0099% 1 in 1,000,000
above 174 No limitations Shakespeare, Goethe, Newton