Collective teacher efficacy #1 impact on students (John Hattie's Visible Learning research) 

This video considers what John Hattie's research says matters most for student achievement. Based on his research project and books, Visible Learning, we look at the number one factor on student achievement which is collective teacher efficacy. Teachers matter - but how so?
Research cited:
Hattie, J. (2011). Visible learning for teachers: Maximizing impact on learning. Routledge.
Hattie, J. (2023). Visible learning: The sequel: A synthesis of over 2,100 meta-analyses relating to achievement. Routledge.
Hattie, J., & Anderman, E. M. (2019). Visible learning guide to student achievement: Schools edition. Routledge.
Hattie, J., & Yates, G.C.R. (2013). Visible learning and the science of how we learn. Routledge.