This presentation by Elizabeth Rata introduces the Curriculum Design Coherence Model (CDC Model) being trialled in the Knowledge-Rich School Project in New Zealand and England. She describes the CDC Model and explain why it is an effective design tool to achieve conceptual coherence and progression. The presentation describes how the Model works with each of its four elements explained using a chemistry example. The description draws on theoretical ideas about what curriculum knowledge is. She also discusses how the CDC Model is being trialled in the Knowledge-Rich School Project and mentions some initial findings. These include the main finding that the CDC Model is an effective design tool. Not only does it create concept-cohering curriculum, but it avoids the curriculum becoming a list of contents.