In today's world of differentiated classrooms, teachers strive to deliver the best possible instruction to every student while being acutely aware of the differences in outlook, circumstances, experience and skill in every child. Bright Islands Complete Comprehension (CoCo) is built on the core idea of offering every student instruction personalised to their needs. With Bright Islands CoCo advanced system of classroom management, one teacher can administer a class in which every student might be at an instructionally different level.