“…First, we extracted means, standard deviations ( SD ), proportions (e.g., percentage of students in a school with one or more ODR), and sample sizes for all included outcomes. If descriptive statistics were not available, we extracted t values for t tests (suspensions in Algozzine, Wang, White et al, ), F values from analysis of variance models (Guardino, ), or recorded the author reported effect sizes (Bradshaw, Mitchell, & Leaf, ; Bradshaw, Waasdorp, & Leaf, ; Gage, Lee et al, ; Gage, Lee, Grasley‐Boy, & Peshak George, ; Gage & Stevens, ; Grasley‐Boy et al, ). We then calculated standardized mean difference effect sizes ( g ) and the variance of g for all outcomes following formulas described in Lipsey and Wilson ().…”