There are six full IB schools offering all three programmes including the IB Primary Years (PYP) and Middle Years Programmes (MYP), and the (IBDP). The IB's three programmes were not actually designed as a continuum. Each is a standalone framework and curriculum, developed at different times and stages of the IB's evolution. Increasingly, the IB organisation is moving to provide an overarching framework for children from 11 through to 19. Even with this, however, it is not necessary, or even usual for a school to offer all programmes.