Following pilot implementation in 2003-2004, a cohort of 16 ÁùºÏ±¦µä schools received district support for the implementation of Positive Behavior Support (PBS) on their campuses in 2004-2005. The results of the evaluation suggest that by spring 2005, most schools had created representative PBS teams, established clearly defined behavioral expectations, developed on-going systems for rewarding behavioral expectations, and implemented systems for responding to behavioral violations.