Here's a quality infographic from dataqualitycampaign.org. This is exactly what Far North is trying to build, but right now, even step one can be impossibly difficult in existing school district data structures. My first year teaching, I had no access at all to actual achivement data. I had check marks next to accomplished standards. What I needed in that environment was an informed, annotated, multi-dimensional, skill-based grade record rather than "done" or "not done." I wasted months trying to figure all of that out myself.
Take a look at the infographic. Imagine teaching with tools that actually make it possible!