What system does your school use SophieD? Is it one they subscribe to or one the school has created itself?
I asked if they would be able to make it so that any media would have to be approved before it was put on the site- the principal didn't really seem to see why we'd want to, and the people who set up the system said they found doing that was "too time prohibitive".
I've been very open about my concerns with my son and he has deleted everything he had online that wasn't strictly school related, (he did that without me asking him to, he then told me he had and said "at least I'M following the rules then aye mum"
) and he's stopped nagging me to put photos up. I said we can chose one for his profile picture together. SO at least he's listening to me and understands I'm not just trying to be a killjoy!