QA just recently got re-certified for another five years the IB.  From what I hear their Upper School IB is stronger than the MYP and PYP IB, but that is mainly because of the very high number of Arabic speakers in the Lower School.  I don't work at QA, but I have worked at other IB schools internationally, and I'd have to say that QA at the Upper School level compares very favourably to the any I've worked at.  I don't have enough experience at the Lowe School level to have a meaningful opinion, but word is that the lack of second language support was an issue during re-certification.

 

It is my perception that at the Upper School QA is an "international school", but at that lower school it is much more of a national school  just because of demography.