Based on two projects per year, this can be adapted for a number of projects and uses levels with grade comparisons to determine if positive progress is being made in line with Progress 8 measures.
Rather than levels of progress, it uses a set level regardless of the students age so an A grade in Year 7 might require a different set of criteria than an A grade in Year 9. Using this method, an equivalent level can be awarded and, with the target level input at the end of Year 6, this can be used as a tracking/progress system.
Additionally, it uses 10 key assessment criteria in a design project to ensure a fair and realistic attainment 8 grade for a project.
It is quite experimental given the lack of definitive direction regarding Progress 8 but can be used to adapt your own assessment methods.