What’s the most powerful force in a school?
Not a curriculum.
Not a technology.
Not a policy.
It’s teachers believing in each other’s capacity to make a difference.
Collective Teacher Efficacy—the shared belief among educators that together they can positively impact student achievement—is one of the highest-impact influences ever studied.
According to John Hattie’s Visible Learning research, this practice has a weighted mean effect size of 1.01, based on:
• 4 meta-analyses
• 132 studies
• 29,135 students
• 132 effects
What does this mean?
When teachers collaborate with a sense of shared purpose and confidence:
• Students benefit from stronger instruction
• School culture becomes solution-focused
• Professional growth becomes collective
• Everyone rises together
Collective teacher efficacy turns isolated practice into empowered action.
When we believe in us, we change what’s possible for them.
Do you work in a school where collective efficacy is visible? How is it nurtured?
Abderrazak Behhar 