Sadly, it's a new variation on an old theme. Many schools are more interested in covering their arses than doing anything. Way back in the late 70s my mum taught in an appalling school. It was discovered that some of the kids were making "kung fu throwing stars" for use at football matches (this was at the height of football hooliganism and the "inter city firms") - the head teacher's immediate response was "how do we stop the police getting involved?"
There was also sexual violence - my mum had one of her 12 year old tutor group in tears one day. The girl had gone to the phone box outside the school to ring her mum, and found the phone already ringing. She picked it up, and it turned out to be a punter trying to contact one of the older girls - some bastard was prostituting schoolgirls using the phonebox outside the school gates as a contact number. Again, hushed up and brushed under the carpet.
My mum just about ended up with a nervous breakdown from the stress of trying to help her pupils against a backdrop of senior management who didn't give a crap.
So I'm afraid it doesn't surprise me in the slightest that schools are failing their female pupils. As far as I can see, the only substantive change in school management practices between the 70s and now is that it's now much, much harder to permanently exclude a pupil. And unfortunately this goes hand in hand with a massive social change which means that really violent misogynistic porn is just a tap or two away on some child's smartphone.