“Visible Learning means an enhanced role for teachers as they become evaluators of their own teaching. According to John Hattie Visible Learning and Teaching occurs when teachers see learning through the eyes of students and help them become their own teachers.”
The stars relate to how the amount of quality research supporting this effect.
Free downloads here of Student Perception Survey forms for primary & secondary, as developed by Cambridge and used by Vicki Phillips (Resource 4). They look so useful.