It would be really interesting (seriously) to hear what it really WAS like in girls' shower rooms - especially during the 1950s / 60s / 70s ' in the UK / USA (and elsewhere). There are lots of accounts (and I would say pretty aćcurate) of what it was like for the boys.
I am sure my grammar school (where I attended 1963 - 1970) was pretty typical. You had no option but be totally naked to take showers (twice per week...after PE and Games..some terms there was swimming as well). The PE Master (Coach) always checked up on us. If anyone ever dared to try dodging the showers, they risked being slippered (whacked with a gym shoe / trainer) on the bare buttocks, forced to take the shower anyway and then put into detention. He would also whack anyone who he thought was messing about...whether or not they were dressed / half - dressed or still naked.
This was strictly enforced. Always. Any thoughts about modesty...forget it!! It was simply not countenanced. Of course, there was the usual range of boys...shy boys, nervy boys, boys who seemed not to mind, extrovert boys, uninhibited / exhibitionist boys, 'rude' boys etc. But you had to get naked whatever your personality. Many hated it, of course.
I have a friend on another site who was talking to his wife about girls PE in the 1970s (UK). She told him that the girls (especially in their teens) were paranoid about enforced nudity and many found it extremely / incredibly upsetting / distressing.There was a LOT of resistance and they accused their PE mistress of Lesbianism!!!
So...I am not, myself, especially bothered about whether or not girls shaved their pubic hair....but WHAT was the atmosphere REALLY like in the girls' changing / shower rooms??