The NYT's Sam Dillon tells us that videotaping is "unfolding on a scale never undertaken in educational research" (Teacher Evaluations May Get a Video Assist) and presents the use of videotaped review and scoring as an alternative or complement to value-added measures and real-life classroom observations. Of course, the effort is being funded in part by the Gates Foundation (the alternate headline for the Times article is "Teacher Ratings Get New Look, Pushed by a Rich Watcher"), and it'd take an awful lot of time and technology to tape and
