Reform of school zero tolerance discipline policies is complicated by a lack of systematic evidence on the prevalence and characteristics of such policies. Through document analysis, this study compares explicit zero tolerance laws/policies and mandatory expulsion laws/policies across the domains of federal law, state law, district policy, and…

Zero tolerance discipline policies have come under criticism as contributors to racial discipline gaps; however, few studies have explicitly examined such policies. This study utilizes data from two nationally representative data sources to examine the effect of state zero tolerance laws on suspension rates and principal perceptions of problem…