The English Schools Foundation is looking at running other curricula alongside the controversial International Baccalaureate but has ruled out a full-scale return to A-levels.
ESF chief executive Heather Du Quesnay was speaking in the wake of parents' criticisms that the IB was not suitable for all pupils and there was a lack of academic options.
One parent said she had no choice but to pull her daughter out of the ESF and take her to Britain so she could study A-levels.
'I don't want to split our family up, but she won't be able to pass the language component. I don't have any choice,' she said.
Pupils have to score at least 24 points and pass all six subjects to gain the IB diploma.
Another parent, whose son was struggling with the IB workload at South Island School and saw four of his friends drop out because of it, said there was a world of difference between the diploma and A-levels.
'My daughter was studying A-levels and he had a much heavier workload. There were days when she had little to do whereas he was weighed down by the IB,' he said.