Found Effects

The WWC found QOP to have no discernible effects on progressing in school or completing school

Improvement index

The WWC computes an improvement index for each individual finding. In addition, within each outcome domain, the WWC computes an average improvement index for each study and an average improvement index across studies (see Technical Details of WWC-Conducted Computations). The improvement index represents the difference between the percentile rank of the average student in the intervention condition versus the percentile rank of the average student in the comparison condition. Unlike the rating of effectiveness, the improvement index is based entirely on the size of the effect, regardless of the statistical significance of the effect, the study design, or the analyses. The improvement index can take on values between -50 and +50, with positive numbers denoting results favorable to the intervention group.

The average improvement index is +2 percentile points for progressing in school and +4 percentile points for completing school based on the one study of QOP that passed evidence screens.

Summary

The WWC reviewed two studies of the effectiveness of QOP. One study met WWC standards with reservations; the other did not meet WWC evidence screens. Based on the results from the one qualifying study, the WWC found no discernible effects on progressing in school or completing school. The evidence presented in this report may change as new research emerges.