I see some parents are up in arms because their school brought in the IB and now the pupils haven't done v well and haven't got into their top two university choices. Is this because it is harder than A levels, and the school hasn't, yet, worked out how to get the pupils up to the top grade? Or it is much easier to get 3 As at A level than it is to get the top grade in the IB? Thus proving that some pupils from some schools aren't actually brilliant but have just been taught to pass the exams up to an A grade (my DCs included!)
Personally, I think it would be a good thing to bring it in to the education system, state and private, as it would possibly sort the 'men from the boys' in the plethora of A grades that are given out.