DS has received his GCSE results and was disappointed to get D's in Chemistry and Biology - got C in Physics. He would like to re-sit the chemistry in Yr12, and asked about this at his sixth form enrolment day yesterday.
Apparently the teacher has told him, a) she has to check some paperwork so will let him know on the first day back whether he can do the re-sit at all.
b) it will be completely independent study (I suppose then that you would call that revision) and
c) it will probably be a year before he can do the exam again.
Could anyone let me know if this all sounds usual, as I expected him to be joining either a GCSE class or an AS level class with appropriate work given until the end of November (the date he said the first re-sits are usually done) I was surprised at her suggestion of a year, seems a long time to be independantly revising!! - he re-sat his English Language, originally done last November, in order to improve his grade - achieved a B this time 
Also, he sat the higher paper, so has suggested that he would like to re-sit but this time foundation - again, is this a reasonable thing to do?
Thanks in anticipation 