To keep the forum on track... you are from the UK so I wouldnt worry in the least about the entrance exams. These exams are general knowledge tests which determine what level she is at and her english abilities.

As for Islamic and arabic studies, they arent mandatory at a lot of international school (only in some instances are arabic lessons mandatory but certainly not Quran).

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"Diplomacy is the art of saying 'Nice doggie' until you can find a rock - Will Rogers"