Totally not my area to wade in on, but the fact that a 5-15% gender deficit starts before age 5 and stays roughly stable through graduation seems to imply it's

Totally not my area to wade in on, but the fact that a 5-15% gender deficit starts before age 5 and stays roughly stable through graduation seems to imply it's not something that the school system is getting wrong: * Girls are 14 percentage points more likely than boys to be "school ready" at age five" "a seven percentage-point gender gap in reading proficiency in the fourth grade widening to an 11-point gap by the end of eighth grade" ~7% more girls graduate high school in 4 years (88%/82%) * gender gap in bachelor's degrees was 15 points