DS's sports coach /porn on twitter - AIBU?

[Pebbles574]

DS (14) had 2 mates round and I was aware of 'something' going on, as they were clustered round his ipad, but quickly shut it down when I walked past.
My 'sixth sense' just made me curious, so I interrogated asked him about it later on his own, and he admitted that they'd been looking at some of their teacher's twitter accounts.
Their sports/rugby coach identifies himself as 'teacher at XYZ school' and his profile pic is wearing school logo sports kit. He does say 'all views my own'. His own posts are mostly of the school teams he coaches / match results and retweets of sporting stuff.
However, when you click on who he 'follows' a lot of it is 18+ adult/porn accounts. So within two clicks off his profile it was all pretty hardcore anal/oral videos and stuff.
My son and his friends had been checking who he followed, and this is what they had found.

I know this stuff exists, and I know 14 year-olds can easily find it if they want to, but AIBU in thinking that a teacher, and 'role-model' for some of the boys, should keep this off his very public twitter account, where he is being seen to represent the school?

Thanks for replies.
He is definitely following them (not being followed by them).
I don't think he's been hacked, as this is the sort of thing I could imagine him doing.
He's a bit of a jerk to be honest. Perhaps the school would like an excuse to get rid of him!

This is a safeguarding issue for both the school and the individual teacher. It does need to be reported to the school, though I would assume the best of the teacher (he's been hacked etc) when talking to the school. Let the school and other appropriate bodies make the decision how much this is an issue with the teacher. Though best practice would certainly not be to have an account that is obvious, so easy to identify him by and so full of school related snipets of information.
One thing you can guarantee and that is that if your son and his friends have seen it and the offending sites, then a lot more of the school pupils will have also seen it, so you probably will not be the first person raising it with the school.

It really doesn't matter if it's by accident or not, if he is having a personal Twitter account and involves the school in that then he needs to be responsible with that account, simple as that! Definitely report