John Hattie

Visible Learning

1. IDEA 1

   Evidence can guide teaching

   Hattie combined the results of more than 800 meta-analyses of research on what affects student achievement. He aimed to find which factors make the biggest difference. His aim was to replace opinion with evidence about what works best in classrooms.

2. IDEA 2

   Effect sizes compare influences

   Hattie used effect sizes, a statistical measure, to compare the impact of different factors on learning. This allowed influences to be ranked. In his account, a larger effect size means a bigger difference in what students learn.

3. IDEA 3

   A benchmark separates strong effects

   Hattie proposed a hinge point of 0.4, the average effect of a year of schooling. Influences above this, he argues, deserve attention. In his view, practices that fall below it may be helping little more than normal growth.

All 8 ideas from Visible Learning →