what happened on data?

Short version: not much.
While I didn't get to stay for the whole thing, the bit I was there for (and the update I got afterward) is some more defense from the Commissioner, which built on top of the steady drumbeat throughout the meeting of "We MUST have ways to share data!" There were a number of unanswered questions from earlier testimony (which those who raised them will be raising again).
I took the whole packet of information that was handed out at the meeting on this issue, which I'll be sharing with the School Committee. At the least, you'll be seeing it on our agenda!