Technology (video) rescues teacher improvement

There is a very interesting story in the NY Times about a major initiative in the US, funded by the Gates Foundation, to use video extensively in observing and improving classroom teaching. Teacher Ratings Get New Look, Pushed by a Rich Watcher There is a considerable likelihood that the initiative will be ruined by too much focus on policing and not enough on professionalism, but here's hoping. Digital video might be coming to the rescue of a very sad history of teacher observation and self improvement. It can allow observation to be relatively unobtrusive, and provide an objective record of what happens in a class. Video is relatively cheap now, and small cameras can record vast amounts of vision and sound, all with precise time tracking. A problem is that single camera covering a whole room does not provide the ability to focus in on detail as a human viewer can do. This means that an effective system is relatively expensive. But then so is ineffective teaching.