"
Version 1.1 – Updated August 2021

# Collective teacher efficacy

## Overview

• Influence: Collective teacher efficacy
• Domain: Teacher
• Sub-Domain: Teacher attributes
• Potential to Accelerate Student Achievement: Potential to considerably accelerate
• Influence Definition: The shared belief by a group of teachers in a particular educational environment that they have the skills to positively impact student outcomes.

## Evidence

• Number of meta-analyses: 3
• Number of studies: 85
• Number of students: 3,490
• Number of effects: 85
• Effect size: 1.36

## Meta-Analyses

Meta-Analyses
Journal Title Author First Author's Country Article Name Year Published Variable Number of Studies Number of Students Number of Effects Effect Size
Unpublished Thesis Eells USA Meta-Analysis of the Relationship Between Collective Teacher Efficacy and Student Achievement 2011 Collective teacher efficacy 26 1,403 26 1.57
The Factors Effecting Student Achievement Cogaltay &Karadag Turkey The Effect of Collective Teacher Efficacy on Student Achievement 2017 Teacher collective efficacy 35 2,087 35 1.22
Unpublished Thesis Norris USA The relationship between collective teacher efficacy and school-level reading and mathematics achievement: A meta-regression using robust variance estimation 2018 Collective teacher efficacy 24 0 24 1.28
TOTAL/AVERAGE 85 3,490 85 1.36

## Confidence

The Confidence is the average of these four measures, each divided into five approximately equal groups and assigned a value from 1 to 5 based on the following criteria:

• Number of Meta-analyses
• 1 = 1
• 2 = 2–3
• 3 = 4–6
• 4 = 7–9
• 5 = 10+
• Number of Studies
• 1 = 1–10
• 2 = 11–50
• 3 = 51–200
• 4 = 201–400
• 5 = 400+
• Number of Students
• 1 = 1–2,500
• 2 = 2,501–10,000
• 3 = 10,000–20,000
• 4 = 20,000–100,000
• 5 = 100,001+
• Number of Effects
• 1 = 1–100
• 2 = 101–300
• 3 = 301–600
• 4 = 601–1,200
• 5 = 1,200+
Confidences
Number of Meta-Analyses Number of Studies Number of Students Number of Effects Overall Confidence
Confidence Factor 2 3 2 1 2