Rigorous evaluations of the Positive Action program have consisted of two matched-control designs with archival data collected by school districts during the 1990s (Hawaii, Nevada and a large southeastern district) and two recently completed randomized trials (Hawaii and Chicago). The evaluators reported statistically significant improvements in school performance and behavior as follows (all expressed as percentage improvements by the intervention group compared to the control group).
Multiple studies have demonstrated that more exposure to Positive Action produces stronger effects. Some studies demonstrated greater effects in high-risk schools (higher mobility, poverty or ethnic minorities).