Would you tell parents about inappropriate searches during a sleepover?

[itwasyourshowallalong]

DC (11) had a friend over for a sleepover recently

I don’t want to divulge too much in case parents are on here, but something was searched for on the internet that shouldn’t have been (completely inappropriate for age)

DC has never searched for anything like that before, I keep a close eye - however, it could very easily have been one or both of them searching, so I cannot hand on heart say it was either child - it’s impossible to know

Guest child was also VERY sexually explicit, repeatedly, and had to be told to stop repeatedly (younger DC in the house)

Question now is whether to tell the parents/how?

DH doesn’t want me to say anything, but I feel that at the very least they should be aware (I would want to know if it was my child)

WWYD?

He has been watching and looking up things on the internet for a while that's for sure.
I had the misfortune to be on a bus with a few year 7 boys (think Harry Potter small like in the first film) and the conversation I overheard was NOT what I expected to hear at 3.35pm that's for sure.

Certainly tell the school. Schools have computers and children access them.
I ran a club and while they were supposed to be researching their history, I saw a cluster of Y6 boys at one machine, with a curious attutude. They didn't want me to see. Now the provider had pretty good filters on so I wasn't too concerned as I got the cluster broken up, but I looked at the history after the club. The Greeks, and naked statues, as I recall. Words were had with the boy who initiated it, and suspension from the club. Maybe I should have taken the matter further.
In the case of the OP, the IT Coordinator will need to be alerted by the safe-guarding lead to keep a watch on the guest child. There are a lot of computers in school now, some have one per child. I wouldn't want the responsibility of keeping them all clean now there could be children with advanced skills and devious minds.
It's a matter of keeping everyone safe.

Yabu.
i think 10 maybe but 11 where theyre at secondary. The boys there were saying stuff about BJ etc to the girls in y7 boys also y7. Other sexual stuff. So whilst i agree its totally inappropriate age wise and some boy parents are letting them watch and share a lot of crap, it doesnt necessarily mean its parents letting them so much as peers.
Even if just y6 about half of those will have older siblings who may be saying stuff.