We are considering schools for ds, whose academics have been up and down a lot due to medical issues. Recently we have been considering a number of schools but recently saw one we like very much for him (senior school) but they only do IB or Cambridge Pre U. Looking forward I don't see DS doing the pre-u but wondering how challenging he might find the IB, we know very little about it, he is not a straight A student, we're confident he'll be able to get into the school but just not sure about the tail end of it. Can anyone advise?