It's a bit funny to see a sector of society that is held in an unusually tight deathgrip by adherents of the cult of progress continually pick back up the ideas they jettisoned years ago. You could point to a variety of examples, but I have the education system specifically in mind. First it was uniforms: "we have discovered,through cutting-edge research, that children will behave better when not dressed like hooligans." It's like the little cut-out man from the Guinness commercials: "not drinking 6 beers at one time? Brilliant!"
Now, it's single-sex education
. High schoolers might learn better without the distractions of the opposite sex? Brilliant! Of course, this is something we've known for centuries. But hey, what do we know? We're just silly Catholics.