The irony of accountability is that it actually hinders the very conversation that needs to be had when it comes to instructional strategies and results from student work.
Transparency is the word that will help us have those conversations. If everything we do as educators is transparent then it will organically foster a dialogue.
Big data is another catch22. Data tells us where we've been, not where we're going.
The real question is what information do we need to push our practice.