Could you give an me an idea of what you mean by inflexible Petunia? I don't think my DC have needed any flexibility until now, as they have just toed the school line so far.
Certainly the structure of the Colyton curriculum generates inflexibility due to the fact it is out of step with every other school in the country.
Children cannot easily join the school after Yr7 because they will have covered less of the curriculum than Colyton children of the same age. No new Sixth formers can join the school, as stated on their website, for the same reason.
By contrast, Colyton children wishing to leave after GCSE in Yr10 to study subjects not offered at Colyton will be a year younger than their peers when joining other Sixth forms and would consequently take their A levels a year early.
For Yr6 parents the prospect of Sixth forms and Uni must seem a very long way off but it is frightening how quickly the time passes and is worth consideration when choosing a secondary school.
GCSE grades achieved are likely to assume an increasingly important role for Uni applications as most schools, including Colyton, will no longer offer AS levels. It is a moot point whether the children taking GCSEs a year early in Year 10 at age 14/15 would perform better if tested at the "correct" age. One of my DC was quite immature and underperformed at GCSE but did very well at AS level and it all turned out for the best. There will no longer be that safety net from next year as AS levels disappear at Colyton.
The school presents the rationale that bright children become bored taking GCSEs in Yr11 as normal. Other superselective grammars which significantly outperform Colyton at both GCSE and A level when measured by top A* grades don't seem to have this issue. They also give their students the options of enrichment such as the extended project, but there is more flexibility in what will suit different children.
Ha, I'll get off my soapbox now!