If you look at Japanese mangia, it seems that the girls in the more pornographically oriented stuff always have schoolgirl uniforms on. That's *manga,* but in keeping with the point of the posted article, maybe the italian spelling is a bit appropriate.
But note that the manga comics come oriented toward very specific and very defined markets, with those from the Kodansha, Shueisha, Shogakukan and Hakusensha publishing houses in particular being primarily directed at preteen and young teen girl audiences. Too, costume play, whether as nurse, airline stewardess, maid or ,oh yes! schoolgirl uniforms is fairly common in Japan, but hardly limited to that culture and society- see Britney Spears' *One more time* video, or about any performance by the Russian girl duo t.a.T.y., for instance.
But if you're interested, the outfits go for about $200 in the USA....
The Japanese do have fairly disfunctional relationships between men and women. It was pretty sad not only watching men and women interact while I lived in Japan but the disfunctional way that many relationships are portrayed in their media. When one of the most popular romantic manga genres is gay male romances (I couldn't believe the sheer number of women producing fan manga in this genre at Comiket), something just isn't right with the place. As one American co-worker once responde when I told her that Japanese men would lover her high pitched voice, "Japanese men are pretty insecure, then."