This just in.

The Florida Education Association and two named teacher-plaintiffs sued to block VAM because the process is confusing and the state has provided inadequate guidance.

A judge agreed with the plaintiffs. The state education department will either appeal or have to redo the rules and clarify the way VAM is supposed to work.

This teacher-evaluation stuff is complex, poorly thought out, and endlessly divisive.

It is being foisted on states across the nation–thank you, Race to the Top–without any clear evidence that it works.

No one knows whether VAM identifies the worst teachers or those unlucky enough to get difficult students or those who are good at teaching to the test.

District after district will be thrown into unnecessary turmoil.

A few teachers will be thrown out, and they may not be the “bad” teachers.

And the cult of data worship will grow stronger.