There is a boy on DS's table who has taken a dislike to him. Incidents include spitting in his face, throwing food in his face, name calling and antagonistic behaviour such as not letting him use the felt tips, snatching his pencil case and breaking his pens etc.
I've spoken to the teacher and she has moved the boy to a different part of the table but the incidents keep happening.
I want the boy moved from DS's table completely and kept away from DS as much as possible.
If this isn't possible then what should be the next steps in this situation? I've never had to deal with bullying before.
The way I'm feeling I just want to grab the boy and skelp his arse 
BTW, DS is 7, bully boy is 8.