“…Experimental studies have not found any effect of SWPBS on academic achievement (Benner et al, ; Bradshaw et al, ; Horner et al, ), while quasi‐experiments have reported mixed effects (Caldarella, Shatzer, Gray, Young, & Young, ; Freeman et al, ; Gage et al, ; Gage, Leite, Childs, & Kincaid, ; Lane, Wehby, Robertson, & Rogers, ; Madigan et al, ). However, small sample sizes and a short research period (Madigan et al, ) limit the validity of the outcomes.…”