I contributed to this thread earlier but the latest posts have made me want to come back with some more - I would hate anyone to be over influenced by some negative postings on Mumsnet
I have two children at JCoSS, one in year seven and one in year nine. We (and they) are extremely happy with the school. I see no evidence for anything other than very high academic standards. No conversations I have had with other JCoSS parents suggest that they feel that the academic standards are low.
I showed my children the posting by MrBakedBean which was met with disbelief. Year seven art does include colouring as part of their work on the colour wheel - it is certainly not something which they do in maths. They didn't recognise the reference to "recording" in English. Their description of current work in English seems interesting, academic and worthwhile to me. I don't understand the points about science - the children complete KS3 work in the first two years, start GCSE courses in year 9 and most are expected to do three sciences - that seems a fairly high academic expectation to me.
JCoSS children are regularly assessed and given targets. Their performance is closely monitored and global statistics for last year were impressive.
Ofsted, who will have looked in detail at the data said
Students make exceptionally good progress in mathematics.
JCoSS will suffer because it does not have a track record in public examinations. When we chose it for our eldest, others were keen to go down the tried and tested JFS route. As far as I can see, JCoSS is doing most things right and the suggestion of low academic standards is unfounded.
Most of all, though, my children are keen to learn, work hard and celebrate their and others' achievements.