MN164. I am confused at your response.
You posted the following quote
"girls attending all-girls’ schools were less likely to be bullied than girls attending mixed schools."
With a link to evidence this quote as being factual data.
The data you provided did indeed state the above, however it also went on to say that "the level of variation in young people’s experiences of bullying that was attributable to differences in the schools attended was minimal".
In layman's term, being in a co-ed school or an all girls schools makes not an ounce of difference when it comes to bullying.
If it were me, I would jump on this and argue that girls schools are therefore better at shaping a girls character 
It would certainly allow for a more interesting debate, rather than the same old, same old.
Yes, shock all round here at the result.