On page 63 of Charles Murray’s book Coming Apart, he displays data on the mean IQ’s of people with various education levels, as of age 25. Although the data is only for white Americans, the white IQ distribution is fairly similar to that of Americans as a whole. He shows data for both 1982-1989 and 2005-2009. Since the data is virtually identical for both eras, I’ll describe the more recent stats:
White Americans with no degree (about 10 years of completed education?): Average IQ 87
White Americans with high school diploma/GED (about 12 years education?): Average IQ 99
White Americans with an Associate degree (about 14 years education?): Average IQ 104
White Americans with a Bachelor’s degree (about 16 years education?): Average IQ 113
White Americans with a Master’s degree (about 18 years education?): Average IQ 117
White Americans with PhD, LLD, MD, DDS (about 20 years education?): Average…
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