Thank you for the advocacy information, Indigo. I suppose the reason I asked whether IB is "inflexible" is that my understanding is that the school had to discontinue the practice of separate math classes (they have always done 30 mins enrichment and this continues) because of the IB regulations, not because this is what teachers or administrators believed was the best approach. I was surprised to hear that IB dictates how differentiation may occur, and was curious to hear if others have experienced anything similar (or to the contrary) in IB elementary.
