If the belief that it’s possible for untrained observers to pitch up in lessons and grade their effectiveness is comparable to a belief in witchcraft, (and Professor Robert Coe’s research confirms that this is the case) where does that leave us as a profession? Observing lessons is the fetish du jour of almost every single school and school leader and, even if we informed and honest enough to accept that learning is invisible and that it’s nigh impossible to get two observers to agree on the quality and effectiveness of a lesson, we’re probably unwilling to let completely let go the idea that there’s still some gold to be mined in the hills of lesson observation.
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The Echo Chamber 