The Roots of Empathy program's effectiveness has been evaluated multiple times by independent reviewers since 2000. Randomized control trials, qualitative and quantitative, and longitudinal have been done. The results consistently show a decrease in aggression (including bullying) and an increase in sharing/inclusive/helping behaviour. Some studies show the decrease in aggression appears to last at least three years. The organization also collects surveys every year from the children, classroom teachers, instructors and parents to evaluate the programs.
