Hierarchical regression analyses conducted at the school level found that the perceived prevalence of teasing and bullying was predictive of schoolwide passing rates on state-mandated achievement testing used to meet No Child Left Behind requirements. These findings could not be attributed to the proportion of minority students in the school,…

This study examined the effect of one interdependent group contingency intervention, the mystery motivator, as it affected three students identified as exhibiting problem behaviors, as well as the effects on nonidentified students in a ninth-grade high school biology class. An A/B/A/B single-case design was used to evaluate the effects of the…