Hang on, so you are a tutor for disabled kids, who has set them up a joint account and lets them use it?
Then you are a terribly irresponsible tutor.
What are you teaching these teenagers by giving them access to this group account?! How to get into pointless arguments and where to find foul mouthed rants?
Also, why wouldnt they have thier own accounts? Unless they are severe enough that they cannot handle thier own accounts, in which case they probably shouldnt be using this one either. At the very least have one for the students and one for the tutor....
Out of all the forums on the internet, you set up an account they can use HERE?!
There are loads of spurs forums out there, with exactly the same sort of discussion and debate on, but without all the constant abuse, ANY of them would be better.