gently I have DC taking both - I have no skin in this particular game. Or perhaps it's fairer to say that I have all my skin in it.
Both are at private school.
DS school chooses IGCSE for a number of reasons. To ensure the boys all get a C aint one of them!
DD's school chooses GCSE. It's mixed ability. The grades are fab. If there were any advanatge for these girls in taking IGCSE, trust me they would be! The school's MO is doing whatever it takes to get each girl a good set of grades, even if they're not the brightest.
The truth is it is much easier to bank nice high marks in CAs, ISAs, pre-prepared orals, during the school year, than have it all riding on black in May.
DD has managed to bank full scores in all her CAs so far in English and Spanish and History. It really isn't tough to do that. The spanish written paper even included a vocabulary list!!!
The only IGCSEs DD is doing is in French. Introduced for the girls likely to do French A level, because the content is (a bit) more challenging and so better prep.