Maybe a week's worth of video? I don't know, there's got to be a way to do it.
Of course, I still think that it's a pipe dream. Success breeds expectations. Most teachers - "progressive" ones in particular - don't want their peers to be successful and raise the bar. Crabs in a pot, most of them.
Got ya! At first I thought you were arguing for merit pay based on test scores. Now I see we're pretty much on the same page.
Regards!