suburban I think that the 2014 cohort are in the midst of a horrible hybrid, no?
A sort of half way house between modular and linear?
The 2015 cohort will fully transfer over, before the O levels are reintroduced (if that actually happens).
As for iGCSE I didn't say they are harder. I said that at a time when most schools adopted modular GCSEs, iGCSEs were seen as a more robust reflection of ability, as there is no possibility of small tranches to be learned and then re-sat as necessary, also no coursework of controlled assessments (which, having seen my DD do them, are utterly absurd, and easy to do well in with the right support).
The grades in iGCSEs are a funny old thing. IMVHO in some subjects it's easier to get a C, yet harder to get an A* due to the way the boundaries are set.
This is one reason why some state schools adopted them for their low ability pupils (who were never in danger of an A*) and why some of the most selective schools adopt them (their pupils can cope with the high boundary).
It's not some conspiracy
.
And of course both state schools and independents have been perfectly able to adopt the linear/terminal GCSEs for a long time. No one had to choose linear. And some selective state schools di take this route!