curriculum as a progression model

One of the barriers to using the curriculum as a progression model is that there is too little understanding of what this might mean. It sounds great but a bit mysterious. I've spoken to a number of people who are happy to agree that the curriculum provides a map of the quality of education a school provides and even approvingly use the phrase 'curriculum as a a progression model' who never the less continue to attempt measuring progress using 'age related expectations' or some other meaningless confection. Let's first deal with why age related expectations are unhelpful. First, they are guesswork. [...]