THE SPREAD OF SINGLE-SEX CLASSROOMS. “The idea of putting boys and girls in separate classrooms certainly is not new—private schools have been dividing the genders for eons. But lately, more and more public schools are opting for single-sex education. The ACLU is fighting against the trend, and already some programs have been dropped. But there are still plenty of educators advocating that separate-but-equal is better for everyone.”

An elementary school I went to in Boston had entrances labeled “Boys’ Entrance” and “Girls’ Entrance,” though things were no longer sex-segregated when I was there. Everything old is new again!