Estimate standardised effect size (Cohen's d) of class size reduction on student achievement, based on Hattie's Visible Learning synthesis. Apply threshold analysis: d ≥ 0.40 is the 'hinge point' above which interventions have meaningful impact.
Estimate standardised effect size (Cohen's d) of class size reduction on student achievement, based on Hattie's Visible Learning synthesis. Apply threshold analysis: d ≥ 0.40 is the 'hinge point' above which interventions have meaningful impact
Each component has a specific meaning:
Note: Interpret the class size effect d result against the thresholds and context described above.
Enter the Hattie's Visible Learning synthesis for the scenario you are assessing. Estimate standardised effect size (Cohen's d) of class size reduction on student achievement, based on Hattie's Visible Learning synthesis. Apply threshold analysis: d ≥ 0.40 is the 'hinge point' above which interventions have meaningful impact. Use the class size effect d result to inform your calculation.