That article is from 1996. It's talking about relatively current viewpoints about showering in school, in an era where it is no longer typical. If you look at the comments from the teachers in my age group, when it WAS typical...what do they say that differs from my experience?
Even the person you quote from the ACLU who claims he was "deluged" with calls and letters...why not write and ask him what he considers "deluged" to mean...hundreds? Thousands? I never said no one was humiliated, if you recall I mentioned my own lack of pubic hair period and the puberty thing, which like most men I got over. (I can't speak for women.
)
In any case my original opinion still stands. People need to stop fearing nudity, it is the human condition and does not automatically signal the threat of sex.