I believe that co-education has been a protection for boys in that female eyes would see through the layers of secrecy and exhortations to “take it like a man” and nail abuse for what it is, thus the existence of matrices and protocols in those places which purport to be civilised but still permit CP to take place. I am also astonished at the extent to which non-consensual underage sodomy was seen as an acceptable cost for a boy to have to pay to achieve a “privileged” education, hopefully that is also a thing of the past.
I suggest, just for the record, you take a look at how many reports and confirmed cases of sexual abuse of children arise in co-educational schools as compared to single sex schools in the UK. I think you might find it surprising.