Sorry, just quickly: Tali, talk to the teacher. I would think that these days they have the 'tools' to deal with these things within the school. There's obviously something going on for this other boy, too, and someone should have a plan of action for dealing with both boys at the same time. See if you can tee up a counsellor for your DS asap, just to see where he's at in his head and what you are dealing with (like how long it's been happening, affecting school work, etc).