“Notably, Chang’s report claims that biological females develop earlier than males do, so requiring girls to enter school at younger ages will create classes in which the two sexes are of more equal maturity as they age. This, the author posits, makes it more likely that those classmates will be attracted to each other, and marry and have children further down the line.”
(…)
“The report does not include evidence of any correlation between female students’ early enrollment and the success rate of their romantic relationships with men. The author also does not detail specific mechanisms by which his proposed policy would increase romantic attraction or birthrates.”
This idea is a complete non-starter from a practical standpoint. Parents would complain about it either way. Either they wouldn’t want girls in school early or they’d want boys in school early, too.
It’s just much easier to treat children all the same.
Also, I personally think this plan would backfire. Girls graduating wouldn’t want to have to be adults earlier than boys, so they’d stay in school longer. And from what I’ve heard, the most reliable way to reduce birth rates is to educate women more.
I think everyone also knows how to ethically increase the birth rate. Make having children easy and affordable. Lots of government assistance. Make sure everybody has access to cheap or free childcare.
And there’s also the generational problems. Young adults can see the problems that the previous generations caused. You can’t go back in time to fix those. It will be expensive to change this sort of thing.
But quick fixes aren’t going to change the underlying problems.
The best way to increase birth rates in advanced countries is: Work life balance. Restore the traditional tax rates on the rich.