Many schools have adopted programming designed to promote students' behavioral aptitude. A specific type of programming with this focus is School Wide Positive Behavior Supports (SWPBS), which combines positive behavior techniques with a system wide problem solving model. Aspects of this model are still being developed in the research community, including assessment techniques which aid the decision making process. Tools for screening entire student populations are examples of such assessment interests. Although screening tools which have been described as "empirically validated" and "cost effective" have been around since at least 1991, they have yet to become standard practice (Lane, Gresham, & O'Shaughnessy 2002). The lack of widespread implementation to date raises questions regarding their ecological validity and actual cost-effectiveness, leaving the development of useful tools for screening an ongoing project for many researchers. It may be beneficial for educators to expand the range of measurement to include tools which measure the symptoms at the root of the problematic behaviors. Lane, Grasham, and O'Shaughnessy (2002) note the possibility that factors from within a student, including those that are cognitive in nature, may influence not only his or her academic performance, but also aspects of behavior. A line of logic follows wherein measurement of those factors may aid the early identification of students at risk for developing disorders with related symptoms. The validity and practicality of various tools available for screening in SWPBS were investigated, including brief behavior rating scales completed by parents and teachers, as well as performance tasks borrowed from the field of neuropsychology. All instruments showed an ability to predict children's behavior, although not to equal extents. A discussion of practicality and predictive utility of each instrument follows.