This chapter discusses research on behavioral skills training (BST) to train staff to implement assessments and interventions with individuals with autism spectrum disorder (ASD). Following an introduction to BST, the chapter discusses research evaluating BST for teaching staff to conduct a variety of assessments, including skills assessments, preference assessments, and functional assessments. The chapter then discusses research evaluating BST for teaching staff to implement a variety of intervention procedures for addressing challenging behavior, teaching skills, and promoting verbal behavior. Across the varied target behaviors and diverse areas of training, the results show that BST is largely effective but that additional procedures, such as booster training sessions or contingency management procedures, are sometimes necessary for promoting generalization or maintenance. In addition, some research shows that the BST components of instructions and modeling alone can be effective. The chapter concludes by discussing the limitations and variations of BST, implications for staff training, and future directions for BST research.