The document discusses using the curriculum as a progression model and the challenges with this approach. It argues that specifying curriculum related expectations (CREs) at a granular level can help address issues like: CREs being too vague; assessing content not taught; and lack of clarity on what students have and have not learned. However, CREs need to balance specificity with broadness for different audiences. Numerical data on student performance is only meaningful if comparable, and should not be the sole focus, as it does not help students understand their progress. Overall, the document advocates for clearly specifying the essential knowledge and skills in a curriculum to guide teaching and assessment.