Positive Behavior Support (PBS) for behavioral problems was included in the 1997 Individuals With Disabilities Education Act reauthorization, reflecting the increased implementation and strengthening empirical evidence for PBS in schools. Whereas PBS can be used reactively, its flexibility has led to a popular comprehensive school-wide model used for prevention. School-Wide Positive Behavioral Support (SWPBS) has been used across a variety of school environments and various demographics and has been evaluated using a variety of different outcome measures. The authors conducted a meta-analysis of SWPBS research spanning 16 years and 20 articles. Specifically, single-case studies were evaluated using a regression-based procedure. Results show promising early trends in the data across dependent variables with a need for further research in specific areas. (Contains 2 tables, 1 figure and 2 footnotes.)