Questions around ethics, privacy and intent of edu data miners/profilers will escalate. Currently a supporter of open data collection within stringent systemic silos.
In our system, the DETNSW silo contains massive 'big data' that could better inform learning if agreed common platforms of edu analyticals, other than just standardised testing, were implemented.
The resistence to change you mention is also important. I'm concerned teacher's need for complex informed learning data will be controlled by other's intent (agendas?) IF we don't understand alternative rich data options available. "Build or buy" as John Fritz/GS? said in seminar.
I dumped thoughts on John's presentation here. Kthxbai