DS keeps getting hurt by another child at school :( advice please

[Tiredmummyneedswineandsleep]

Hi, DS has ASD and is 6. A few months ago a child joined their class who DS and the others seem to struggle with. It's a specialist class with less than 10 children and extra TAS etc...
The child is pretty violent. He scratches and also hits children and staff with toys. DS has been back 6 days. 5 out of those 6 days DS has come home injured by this child. Today he has a red scratch from under his eye to his neck. No note in book or first aid slip. DS gets transport to the school so I don't collect him.

I did speak to the teacher last week who said DS needs to not go in this child's personal space etc.. DS told me the child came up to him and scratched him. I haven't been able to contact the school about this incident but will do tomorrow.
It is upsetting DS and he is becoming very distressed with how much he dislikes the child and doesn't want to see him. I know a few other parents and their children have all had lots of injuries from the child in pst. He seems to be targeting DS daily now though :( I don't want it to sound like a witch hunt as the child obviously has SN to warrant a place at the school and I know when DS was at mainstream he was the odd one out so to speak so know what it feels like.

So upset though. Have taken photos this time as evidence.

I had similar last year, and in the same setting, small class in a SS. My boy is so gentle, so I found it even more upsetting.
To be fair, they told me each time, but on the3rd time, I mentioned the magic word, safe guarding. What we're they actually doing to ensure my sons safety. Had no problems since, even though the boy is still in his class. They manage him and monitor him more carefully.

What rinky says - what are they doing to make sure your son is safe?
I don't think they should turn this on your son - what 6 yo understands that someone needs personal space?

Thanks so much, have already had a response from school which is impressive. Fingers crossed something gets sorted. I know it must be hard but too many incidents now, an isolated one I could live with