Eyeballing the graphs in the Journal of Endoctrinology, looks like American blacks become physically adult roughly four years earlier than American whites. Which makes them approximately intermediate between chimps and men. This is consistent with black females typically experiencing menarche at nine and white females typically experiencing menarche at twelve. Data on puberty in black males seems curiously hard to find, suggesting that it is horribly politically incorrect. Just eyeballing American blacks, looks to me that black males experience puberty at about the same age as black females or close to it, while white males experience puberty about two years later than white females, but that is just a wild assed guess.

The American Academy of Pediatrics has issued a study that says the difference is only one year, as measured by the start of testicle growth. Maybe I am prejudiced, but I find that hard to believe. The interesting measure that people should care about is not growth of testicles, which no one can see, but growth in bones, which everyone can see, and which can be objectively measured far more accurately. Maybe there is not much difference in the age and which testicles start to grow, but there is surely a pretty big difference in the age at which bones have substantially grown. It is also kind of suspicious that there is a only a one year difference in the start of testicle growth, which is hard to define and hard to measure, and a three year difference in menarche, which is entirely unambiguous to define and measure. Much as indications of climate change are more alarming the less they can be accurately measured, and the less alarming the more they can be accurately measured.

Which makes educating whites and black children in the same classrooms segregated by age, rather than by physical development, pretty much insane.

Similarly, stupid to put girls and boys in the same classroom by age during puberty, though not as stupid as putting whites and blacks in the same classroom by age. Indeed, it is pretty obvious that during puberty, kids should be sorted by their puberty stage, not by age.

The reason we don’t do what we obviously should do is that what we are doing advantages female children over male, and young black men over white male children.