AS grades - when do you get breakdowns for each paper - and can you resit only one paper?

[13months]

Disappointing maths result today - DS aware that he messed one whole paper - when/how can we get hold of marks for each paper -- and can he retake just one paper or does it need to be the whole thing?

School/college will have them now, aren't they on his results sheet? I don't get to go in to see my lot as I'm at home with my DDs so haven't seen a sheet for ages. And you can just re-sit 1 paper if necessary.
School will be busy today with clearing for the A2 students but hopefully someone will be able to speak to you next week. He won't need to decide about re-sits for a while, as the deadline for entries is in the Spring term.

My DD got her results by email from school. The first page was her marks for each paper, and the second page was a list of the grade boundaries.

Yes, you can just resit one paper.

We got the breakdown with the overall results . Big anomaly here between a on one paper and d on another producing c overall. Are requesting copy of the script.

You retake the whole paper but then if your grade at the retake is lower on one paper than it was on the first attempt they use that grade.

If you got an A and D this time round and next time got a B and a E then the exam board would combine the two so you'd get an A and a D and then work out your overall grade. That's how OCR do it anyway, not sure about others.

DS was able to retake a single paper.

The breakdown for the individual papers should have been on the results sheet - at least they were for DS last year.
He can resit individual papers - but not until next May/June when presumably he will be doing A2's.
DS actually resat 2 of his AS Maths papers this year alongside his A2 Maths papers as he didn't do particularly well in any of his AS's last year. He said he found the AS resits quite easy and couldn't understand why he did so badl last year.
We were worried about him having so much work to do with re-sits and A2s at the same time but for Maths it's not that difficult as the A2 syllabus is an extension of the AS work (unlike if you are re-sitting something like History, for example, where there would be a totally separate workload to revise for)