Despite what critics say, to me, Hattie is the man in the arena, and what he's done to bring clarity to the murky world of learning is simply outstanding.
This would make a great Far Side cartoon: "The number of ... proportion of females in the group, the wisdom of the crowd goes up". And so, by his own reasoning, Mr Hattie, speaking as a group of one, all male, undermines his own credibility
but Mr Hattie this is based on correlation studies, which is poor research. As Prof Dylan Wiliam says, you don't know if it is teacher efficacy that causes better achievement or whether it better achievement cause teacher efficacy. You even admit this in your latest publication - "a key point of caution is that there is currently only one meta-analysis of 26 research studies. The evidence base is still too small to form anything more than speculative conclusions."
There is a reason why a student's "passion and grit" at a particular interest sets a key to a student's positive outcome-- that is where the teacher should see the proper evaluation of each individual.
