Positive behavior interventions and supports are increasingly utilized in school systems throughout the nation, particularly the school-wide multi-tiered support framework. Given such trends, and the basis of these practices in psychological principles and research, it is important to identify how school psychologists are trained to contribute to such efforts, their involvement in intervention activities, and their perceptions of this approach. We surveyed a national sample of 557 school psychologists regarding their training, involvement, and perceptions of positive behavior supports. The results indicate that although most respondents had a variety of training experiences in multiple behavior-related areas, one quarter did not report receiving any training related to school-wide positive behavior interventions and supports (SWPBIS). Although 35% of school psychologists reported employment in schools implementing SWPBIS, these schools varied in the SWPBIS elements in place. Implications for school psychology training and practice are addressed. © 2011 Wiley Periodicals, Inc.