This is a longitudinal study of the change in the academic achievement gap between African American and European American students from elementary to high schools with large administrative data from a school district in the United States. Analysis of variance between eight tracks of students defined by the school environment of isolated schools or…

This randomized controlled study examined disciplinary outcomes for 201 students who made threats of violence at school. The students attended 40 schools randomly assigned to use the Virginia Student Threat Assessment Guidelines or follow a business-as-usual disciplinary approach in a control group. Logistic regression analyses found, after…