Many schools in China require girls to cut their hairs short, so they don’t spend all their time on it and can study instead.
>街で男女と1m以上離れる
>恋愛禁止のため
>(公立高校)
Basically (as far as my elementary Japanese understands it), a public school has ruled that boys and girls should keep a distance of at least a metre in town in order to forbid relationships.
Life isn't all about studying. We don't want a socially stunted generation that is so optimized for academic success they lose important lessons along the way. And to be honest, you can't stop teenagers anyway.
Edit: Not saying that it would, I'm just questioning the possibility of it.