Yesterday Carl Hendrick shared this image, taken from this article by Michelle Chi:
I would add one more to this list:
- Researchers often think or seem to think that teachers don’t know what they’re doing. A mistake one can make when introducing e.g. spaced repetition. A lot of teachers know this from experience, but that doesn’t necessarily mean they know the name of the concept or the rationale behind it. Still, they are often doing a good job.
From experience to meaning... 
Sorry to sound like an aggrieved scientist, but another reason is that many if not most teachers have never learned how to read or evaluate a scientific article.
Every year thousand of researches published and there is a tussle between the classroom and the research.Classroom needs a practicum advice while research needs classroom as a laboratory and both fail to gain what they are searching for.
So this is exactly what we are hoping to do at Socrates – Head of School. We’ve noticed this gap as well and are distilling the best books on leading and learning and are offering them for free to the world.