The following graph shows extrapolated mean IQ by selected demographics from 2019 NAEP mathematics and reading results among eighth grade public school students. Estimates are computed by averaging mathematics and reading scores and then converting those to IQ scores, assuming a national average IQ of 96 and a standard deviation of 15. This does not take home-schooled or private school students into account:
Eighth grade girls don’t just outperform boys in reading. They also do marginally better than boys do in mathematics. The patriarchy works in mysterious ways.